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Standard User mr_bean
(member) Mon 05-Sep-11 18:35:44
Print Post

More FTTC line stats


[link to this post]
 
It seems that asbokid has quietly been beavering away unlocking the Openreach modem firmware enabling the web interface (links on right hand side of page).

Just tried it - flashed my spare modem with no problems and now can see my actual sync speed!

Sorry no cut 'n' paste available but I have:

Sync D/S: 39999 (Kbps)
Sync U/S: 9999 (Kbps)
SNRM D/S: 6.5dB
SNRM U/S: 16.7dB
Attainable D/S: 40800
Attainable U/S 17667
Atten D/S: 0dB <cough>
Atten U/S: 0dB <cough, cough>
D/S transmit power: +10dB

Oh well - not perfect as the attenuation isn't reported - it was 19dB according to the OR engineer at install in April. Interestingly the max attainable hasn't shifted much as it was 41000Kbps then.

Sync/attainable consistent with the line length of approx 650m and graphs published in various places. Not a lot of wriggle room for full downstream sync on the 40/10 product although upstream looks good. It'll be interesting to see what I get if 17a ever comes along. I doubt 'll get 80/20 but I'm sort of hoping for 60/20.

Edited by mr_bean (Mon 05-Sep-11 20:46:12)

Standard User MHC
(legend) Mon 05-Sep-11 18:48:34
Print Post

Re: More FTTC line stats


[re: mr_bean] [link to this post]
 
In reply to a post by mr_bean:
It seems that asbokid has quietly been beavering away unlocking the Openreach modem firmware enabling the web interface (links on right hand side of page).

Just tried it - flashed my spare modem with no problems and now can see my actual sync speed!

Sorry no cut 'n' paste available but I have:

Sync D/S: 39999 (Kbps)
Sync U/S: 9999 (Kbps)
SNRM D/S: 6.5dB
SNRM D/S: 16.7dB
Attainable D/S: 40800
Attainable U/S 17667
Atten D/S: 0dB <cough>
Atten U/S: 0dB <cough, cough>
D/S transmit power: +10dB

Oh well - not perfect as the attenuation isn't reported - it was 19dB according to the OR engineer at install in April. Interestingly the max attainable hasn't shifted much as it was 41000Kbps then.

Sync/attainable consistent with the line length of approx 650m and graphs published in various places. Not a lot of wriggle room for full downstream sync on the 40/10 product although upstream looks good. It'll be interesting to see what I get if 17a ever comes along. I doubt 'll get 80/20 but I'm sort of hoping for 60/20.


Two minor errors:

2 D/S SNRMs

Transmit power: +10dB is that dBu? dBM?





~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


M H C


taurus excreta cerebrum vincit
Standard User adebov
(eat-sleep-adslguide) Mon 05-Sep-11 18:55:47
Print Post

Re: More FTTC line stats


[re: mr_bean] [link to this post]
 
Hmm.....how long before this particular avenue is closed off wink

Ade

ADSL2+ with BE
DL Sync around 4.8Mbps
UL Sync 1088kbps

DG834GT with DGTeam firmware


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Standard User asbokid
(newbie) Mon 05-Sep-11 20:03:52
Print Post

Re: More FTTC line stats


[re: MHC] [link to this post]
 
Hi,

Those zero attenuation figures are obviously wrong.. But it's a firmware bug that's found in other, maybe all Broadcom 63xx VDSL2 modems, and not just the Huawei.

Here at [1] ,for example, are VDSL2 stats from a Pirelli PRGAV4202N modem-router. The Pirelli is connected via a Profile 17a (yum yum!) VDSL2 connection in Germany. It too shows a zero figure in the attenuation columns.

It's a rudimentary firmware error that could easily be corrected. It seems that Broadcom hasn't updated the web interface to show attenuation stats for VDSL2 connections. The device does report credible atten. figures on ADSL2+.

As for the SNR figures, the Openreach/Huawei is correct in reporting two figures.

So far as I know, VDSL2 Annex B Profile 8c as chosen by British Telecom has a frequency band profile that uses two separate downstream frequency bands. [2]

The two separate SNR figures are for those two bands (D1 and D2).

If you get a shell on the HG612 by logging in from LAN-side via telnet or ssh, and issue the command:

# /bin/xdslcmd info --pbParams

You can see more detailed line stats.. The device should report something like this. Hopefully with more impressive figures.. These stats are from a problematic VDSL2 connection...

Text
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# /bin/xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY statusStatus: Showtime
Retrain Reason: 0Max:    Upstream rate = 6147 Kbps, Downstream rate = 23312 Kbps
Path:   0, Upstream rate = 1997 Kbps, Downstream rate = 23055 Kbps 
Discovery Phase (Initial) Band PlanUS: (0,95) (696,1183)
DS: (32,687) (1192,1627)Medley Phase (Final) Band Plan
US: (0,95) (696,1183)DS: (32,687) (1192,1627)
       VDSL Port Details       Upstream        DownstreamAttainable Net Data Rate:       6147 kbps         23312 kbps
Actual Aggregate Tx Power:        1.3 dBm           9.5 dBm==============================================================================
  VDSL Band Status        U0      U1      U2      U3      D1      D2      D3  Line Attenuation(dB):  8.5     52.6     N/A     N/A    21.5    65.5     N/A
Signal Attenuation(dB):  9.3     51.2     N/A     N/A    21.5    65.5     N/A        SNR Margin(dB):  14.3    14.1     N/A     N/A    6.2     6.4      N/A
         TX Power(dBm): -9.1     0.8      N/A     N/A    9.2    -1.7      N/A


cheers,
asbokid

[1] http://xdsl.at/viewtopic.php?f=20&t=52581
[2] http://www.itu.int/rec/T-REC-G.993.2-200602-I/en
Standard User mr_bean
(member) Mon 05-Sep-11 20:40:02
Print Post

Re: More FTTC line stats


[re: adebov] [link to this post]
 
Hmm.....how long before this particular avenue is closed off
Dunno - I'm guessing but I think all asbokid has done for this firmware is tweak the default firewall rules which block HTTP, Telnet and SSH on the LAN interface so that you can get at them. It looks as though over-the-wire firmware updates are possible so the unit might automagically revert to the BT firewall.
Standard User mr_bean
(member) Mon 05-Sep-11 20:45:59
Print Post

Re: More FTTC line stats


[re: MHC] [link to this post]
 
Two minor errors:

2 D/S SNRMs
Ah, I did say that it wasn't a cut&paste job. 6.5dB downstream, 16.7dB upstream. Have edited the original post.



Transmit power: +10dB is that dBu? dBM?

Says dBmV on the web interface - I guess they mean dBm
Standard User MHC
(legend) Mon 05-Sep-11 20:52:36
Print Post

Re: More FTTC line stats


[re: mr_bean] [link to this post]
 
dBmV - deciBels relative to 1 millivolt

dBm - deciBels relative to 1 milliwatt

They are not equivalent - you can convert between them but not a straight forward calc.





~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


M H C


taurus excreta cerebrum vincit
Standard User MHC
(legend) Mon 05-Sep-11 21:21:45
Print Post

Re: More FTTC line stats


[re: asbokid] [link to this post]
 
In reply to a post by asbokid:
Text
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# /bin/xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY statusStatus: Showtime
Retrain Reason: 0Max:    Upstream rate = 6147 Kbps, Downstream rate = 23312 Kbps
Path:   0, Upstream rate = 1997 Kbps, Downstream rate = 23055 Kbps 
Discovery Phase (Initial) Band PlanUS: (0,95) (696,1183)
DS: (32,687) (1192,1627)Medley Phase (Final) Band Plan
US: (0,95) (696,1183)DS: (32,687) (1192,1627)
       VDSL Port Details       Upstream        DownstreamAttainable Net Data Rate:       6147 kbps         23312 kbps
Actual Aggregate Tx Power:        1.3 dBm           9.5 dBm==============================================================================
  VDSL Band Status        U0      U1      U2      U3      D1      D2      D3  Line Attenuation(dB):  8.5     52.6     N/A     N/A    21.5    65.5     N/A
Signal Attenuation(dB):  9.3     51.2     N/A     N/A    21.5    65.5     N/A        SNR Margin(dB):  14.3    14.1     N/A     N/A    6.2     6.4      N/A
         TX Power(dBm): -9.1     0.8      N/A     N/A    9.2    -1.7      N/A


There are two UPstream and two DNstream and with an additional two UPstream. and one DNstream which the modem can cope with. Not sure exactly which ones 8C uses but is at least 2 & 2 This is shown in the last 5 lines of your quoted code.

The actual figures:

Text
1
2
US: (0,95) (696,1183)
DS: (32,687) (1192,1627)


Show the attenuation figures in both bands - if the router only reports one they I would guess it is only using one band.





~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


M H C


taurus excreta cerebrum vincit
Standard User mr_bean
(member) Mon 05-Sep-11 21:24:10
Print Post

Re: More FTTC line stats


[re: MHC] [link to this post]
 
dBmV - deciBels relative to 1 millivolt

dBm - deciBels relative to 1 milliwatt

They are not equivalent - you can convert between them but not a straight forward calc.
I realise that but I thought that xDSL output levels were normally dBm(W), it says dBmV on the web interface but that doesn't really seem appropriate. Oh and +10dBm is a reasonable value for xDSL power output whereas +10dBmV (about -47dBmW*) seems a bit on the low side.

* Based on 600 Ohm**; impedance

** How do I get the symbol in here?

Edited by mr_bean (Mon 05-Sep-11 21:24:39)

Standard User MHC
(legend) Mon 05-Sep-11 21:31:17
Print Post

Re: More FTTC line stats


[re: mr_bean] [link to this post]
 
I know it must, to some, seem petty but you seem to understand why getting the units exactly correct is important - dBM or dBm or DBm; kb or kB; Mb or MB or mb or mB; dB or dBm; and so on.





~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


M H C


taurus excreta cerebrum vincit
Standard User mr_bean
(member) Mon 05-Sep-11 21:35:28
Print Post

Re: More FTTC line stats


[re: asbokid] [link to this post]
 
# /bin/xdslcmd info --pbParams
Didn't play with that one when exploring the Telnet interface - will do so the next time I take the laptop down to where the modem is.

Excellent work on the firmware BTW!
Standard User asbokid
(newbie) Mon 05-Sep-11 22:56:04
Print Post

Re: More FTTC line stats


[re: mr_bean] [link to this post]
 
Pleasure, mr_bean! Hope you get some use out of it..

There are lots more things that could be done on the Huawei..

The BBU port on the front needs activating. It's clearly an RS232 serial port. The port is seen by the Linux-MIPS kernel as /dev/ttyS1. However, it needs to be enabled in the firmware.[1] As yet, that hasn't been done. There are two binaries in the firmware that try to access the BBU port (/bin/monitor and /bin/equipcmd). The relevant extracts of code from those binaries have been disassembled. For those interested or with suggestions, please email.

It's a puzzle why OpenReach/Huawei ever fitted the BBU port. In early photos of the Huawei in BT's SIN 498 document [2], the BBU port is shown as a USB Type A socket.

Yet at some point, it was decided to downgrade the BBU port from USB to RS232 . A strange decision since the Linux kernel has a mature USB driver for the 63xx processor family. And modems built on that platform do normally have a USB port. Maybe BT thought that a USB port would be too alluring to meddlers and tinkerers?!

Mechanically the RS232 BBU port is presented externally as an obscure JST-XH socket. [3] That socket is apparently more commonly found in model aircraft where it connects servo power packs. Perhaps Huawei had a surplus dustbin full of the connectors. And where better to dump them than on Blighty Telecom!

That xdslcmd command discussed above can supply a huge amount of different statistics, including individual bit depths and SNRs for each of the subcarriers. There are too many stats to manually analyse from their numerical values alone. The stats need to be graphed. That could be done on the Huawei itself. The device could graphically present its line stats via its own web interface. Fun project for someone?!

Alternatively, the device could log an overview of its line statistics to a remote syslogd daemon. That framework is largely supported on the Huawei [4]. Some sort of periodic (cron?) job just needs to be run on the device. That process would query the xdsl driver for the various line statistics. An overview of the stats would be generated. The overview would be sent over the LAN or even the wider internet to a logging daemon.

The xDSL driver in the Huawei can also conjure up undocumented statistics, such as the QAM constellation maps.

Late last year, Netgear accidentally (oopsadaisy!) released Broadcom's confidential source code for its 63xx xDSL driver. Cat, bag, out! It's in that release that the hidden goodies can be found.[5]

Briefly, have a good poke into the xdsl driver code.. In particular, look at the function prototypes in ~/DG834GBv4_V5/DG834GBv4_V5.01.01_src/bcmdrivers/broadcom/char/adsl/bcm96348/adsldrv.c.

There's a function in that file called adsl_ioctl(). If you examine the array of function pointers in adsl_ioctl(), you can determine the full range of ioctl() request codes that the xdsl driver responds to.

Some of those ioctl requests, which query the xdsl driver for stats, are hidden and cannot be reached from userspace using the standard tool xdslcmd.

However, it should be fairly easy (famous last words) to hack up some code that invoked those hidden functions.

I haven't tried it yet, but the function DoGetConstelPoints() sounds particularly interesting.

Judging by its name, the function provides the coordinates of the QAM constellation maps. Calling that function may well provide the data needed to render one of those curious looking graphics like this one..[6]

Anyway.. enough rambling!

cheers,
asbokid

[1] http://huaweihg612hacking.wordpress.com/2011/07/19/a...
[2] http://www.sinet.bt.com/498v3p2.pdf
[3] http://huaweihg612hacking.wordpress.com/2011/08/15/b...
[4] http://img89.imageshack.us/img89/5436/huaweihg612log...
[5] http://huaweihg612hacking.wordpress.com/2011/07/26/b...
[6] http://zone.ni.com/cms/images/devzone/pub/RF_sw_test...

Edited by asbokid (Mon 05-Sep-11 22:59:11)

Standard User asbokid
(newbie) Tue 06-Sep-11 00:55:26
Print Post

Re: More FTTC line stats


[re: MHC] [link to this post]
 
In reply to a post by MHC:
Text
1
2
US: (0,95) (696,1183)
DS: (32,687) (1192,1627)

Hi MHC..

I guess those figures in brackets must be the lower and upper tone numbers for each of the frequency bands. If so, it's not clear why the tones for U0 (0,95) and D1 (32,687) overlap.

This paper [1] on VDSL2 band plans is interesting. It was published by the chief engineer of Ikanos who worked on the xDSL chipset simulator which Broadcom uses.

The OpenReach Profile 8c connection stats can be compared against the stats from that Profile 17a VDSL2 connection in Germany.

Profile 17a has a downstream bandwidth of 17MHz, whereas Profile 8c has ~8MHz bandwidth. Hence the Profile numbering..

Profile 17a uses 4095 subcarriers or "discrete multi-tones" (DMTs) and Profile 8c uses a total of 1972 tones.

That German Profile 17a VDSL2 connection shows that Band U0 is unused. According to the Ikanos paper, Band U0 was designated as a long distance upstream band.

The stats from xdslcmd show that Band U0 is used by Profile 8c in Blighty but the band is not used by Profile 17a in the FTTC product in Germany/Austria. That is presumably because 17a is delivered over shorter distances at higher speeds and Band U0 isn't needed.

Here [2], someone at Ericcson ploughs through the maths to arrive at some figures for theoretical maximum bandwidth in bits per second..

The Profile 17a statistics, duplicated below, appear to show that only one upstream band (U1) and only one downstream band (D1) are actually in use, even though three bands in each direction are technically available.

Maybe that explains the attenuation issue with the web interface of the 63xx firmware. Is it displaying the (average) attenuation for the tones in a single frequency band which maybe is a band that is not in current use?

cheers,
asbokid

Text
1
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# adslctl info --pbParams
adslctl: ADSL driver and PHY statusStatus: Showtime
Retrain Reason: 2Max:    Upstream rate = 992 Kbps, Downstream rate = 13620 Kbps
Path:   0, Upstream rate = 139 Kbps, Downstream rate = 1096 Kbps 
Discovery Phase (Initial) Band PlanUS: (0,95) (872,1203) (1972,2779)
DS: (32,867) (1208,1971) (2788,4051)Medley Phase (Final) Band Plan
US: (0,95) (872,1203) (1972,2779)DS: (32,867) (1208,1971) (2788,4051)
       VDSL Port Details       Upstream        DownstreamAttainable Net Data Rate:        992 kbps         13620 kbps
Actual Aggregate Tx Power:    -  24.4 dBm           7.4 dBm============================================================================
  VDSL Band Status        U0      U1      U2      U3      D1      D2      D3  Line Attenuation(dB):  3.3     14.9    22.6     N/A    7.0     16.8    27.3
Signal Attenuation(dB):  0.0     14.5    0.0      N/A    7.0     16.8    27.3        SNR Margin(dB):  0.0     32.6    0.0      N/A    36.9    0.0     0.0
         TX Power(dBm): -128.0  -24.4   -128.0    N/A   -4.6    -22.0   -128.0


[1] http://www.analogzone.com/nett0220.pdf
[2] http://www.ericsson.com/ericsson/corpinfo/publicatio...

Edited by asbokid (Tue 06-Sep-11 00:56:16)

Standard User mr_bean
(member) Wed 07-Sep-11 14:20:13
Print Post

Re: More FTTC line stats


[re: mr_bean] [link to this post]
 
Cool:

# xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Max:    Upstream rate = 17096 Kbps, Downstream rate = 40792 Kbps
Path:   0, Upstream rate = 9999 Kbps, Downstream rate = 39999 Kbps

Discovery Phase (Initial) Band Plan
US: (0,95) (696,1183)
DS: (32,687) (1192,1627)
Medley Phase (Final) Band Plan
US: (0,95) (696,1183)
DS: (32,687) (1192,1627)
       VDSL Port Details       Upstream        Downstream
Attainable Net Data Rate:      17096 kbps         40792 kbps
Actual Aggregate Tx Power:    -   1.0 dBm          10.0 dBm
============================================================================
  VDSL Band Status        U0      U1      U2      U3      D1      D2      D3
  Line Attenuation(dB):  6.5     31.3     N/A     N/A    15.4    39.2     N/A
Signal Attenuation(dB):  12.4    30.4     N/A     N/A    15.4    39.2     N/A
        SNR Margin(dB):  16.8    16.9     N/A     N/A    6.6     6.5      N/A
         TX Power(dBm): -13.8   -1.3      N/A     N/A    9.2     2.6      N/A
Standard User orly
(fountain of knowledge) Wed 07-Sep-11 14:22:04
Print Post

Re: More FTTC line stats


[re: mr_bean] [link to this post]
 
How safe is it to do this.

I'm quite interested to have a poke around but obviously don't fancy the idea of wrecking the modem in the process tongue

---
> Comparison chart of FTTC ISPs
> Got FTTC? Complete the survey

BT Infinity 8th July 2010
(NIBA)
600m (approx) to cabinet
23.5mbit down / 8mbit up
Standard User mr_bean
(member) Wed 07-Sep-11 14:24:56
Print Post

Re: More FTTC line stats


[re: asbokid] [link to this post]
 
The BBU port on the front needs activating. It's clearly an RS232 serial port. The port is seen by the Linux-MIPS kernel as /dev/ttyS1. However, it needs to be enabled in the firmware.[1] As yet, that hasn't been done. There are two binaries in the firmware that try to access the BBU port (/bin/monitor and /bin/equipcmd). The relevant extracts of code from those binaries have been disassembled. For those interested or with suggestions, please email.

It's a puzzle why OpenReach/Huawei ever fitted the BBU port. In early photos of the Huawei in BT's SIN 498 document [2], the BBU port is shown as a USB Type A socket.
The most obvious answer is that BT (at some point) thought battery back-up was a useful thing to have. Whether you agree....

It makes sense in that case to use a connector usually associated with power supplies - I assume that the serial port was intended to get status from a "smart" battery pack. The fact that there's a "battery status" page on the UI also suggests this was the plan.
Standard User mr_bean
(member) Wed 07-Sep-11 14:26:40
Print Post

Re: More FTTC line stats


[re: orly] [link to this post]
 
OK I 'fess up - I bought a spare modem to do this with. However, absolutely no problems with the "upgrade" as per asbokid's instructions. It took less than five minutes.
Standard User ichilton
(learned) Wed 07-Sep-11 14:45:44
Print Post

Re: More FTTC line stats


[re: mr_bean] [link to this post]
 
Where did you buy one from? (how much?)

Standard User MHC
(legend) Wed 07-Sep-11 14:49:27
Print Post

Re: More FTTC line stats


[re: asbokid] [link to this post]
 
Keep up the good work ...

It would be interesting to look at an unbranded Huawei too ... they are also made with four Ethernet ports. The code used for the BT variant is likely to be a modified version of the original which may have had additional functionality included.





~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


M H C


taurus excreta cerebrum vincit
Standard User MHC
(legend) Wed 07-Sep-11 14:53:23
Print Post

Re: More FTTC line stats


[re: mr_bean] [link to this post]
 
Battery back up or supply has been considered for FTTC (and FTTH) which would then allow users to have just a DSL line with no telephony associated with the line, just VOIP. The is a requirement for BT to ensure emergency calls can be made in event of a fire/emergency when there is no local power. So far BT do not want to go down that path as it would be very easy for the end user to remove battery power and emergency contact would be lost.





~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


M H C


taurus excreta cerebrum vincit
Standard User Garyilka
(knowledge is power) Wed 07-Sep-11 15:07:50
Print Post

Re: More FTTC line stats


[re: ichilton] [link to this post]
 
In reply to a post by ichilton:
Where did you buy one from? (how much?)
There's one on eBay at the mo....... http://www.ebay.co.uk/itm/Huawei-DSL-Modem-BT-openre...
Standard User RobertoS
(sensei) Wed 07-Sep-11 15:22:55
Print Post

Re: More FTTC line stats


[re: MHC] [link to this post]
 
In reply to a post by MHC:
Keep up the good work ...

It would be interesting to look at an unbranded Huawei too ... they are also made with four Ethernet ports. The code used for the BT variant is likely to be a modified version of the original which may have had additional functionality included.
Functionality removed tongue.

IIRC asbokid reported a while ago it is in fact a VDSL2 router.

My broadband basic info/help site - www.robertos.me.uk
My domains,website and mail hosting - Tsohost. Internet connection - IDNet Home Starter Fibre. Live BQM.

"Where talent is a dwarf, self-esteem is a giant." - Jean-Antoine Petit-Senn.
Anonymous
(Unregistered)Wed 07-Sep-11 15:23:40
Print Post

Re: More FTTC line stats


[re: mr_bean] [link to this post]
 
Hi mr_bean,

I am just curious regarding your stats & wonder if you could confirm a couple of things for me as I am currently suffering from poor FTTC download speeds, although they were very reasonable at first (not the full 40 Mb, but still a lot better than they are at the moment.

I am toying with the idea of obtaining a spare modem to flash that I could use for one-off testing purposes, as & when I would need to see my stats.

I can't flash my current modem as BT may be making more home visits to check things & also may wish to access the modem remotely through the back door in order to sort out my issues.

The questions then:-
a) I see that speed-wise, you are obtaining the full Monty US & DS & that your DS attenuation appears quite low(ish) in comparison to mine as reported by the latest engineers JDSU at 23dB.
Do you know roughly what your line length is from the cabinet?

b) Are you on the Infinity package directly from BT, or a package via A.N.Other ISP?

c) How long have you had FTTC?

d) Have you experienced any low speed issues or line faults since FTTC was installed?


Pauline.
Standard User mr_bean
(member) Wed 07-Sep-11 16:02:03
Print Post

Re: More FTTC line stats


[re: Anonymous] [link to this post]
 
The questions then:-
a) I see that speed-wise, you are obtaining the full Monty US & DS & that your DS attenuation appears quite low(ish) in comparison to mine as reported by the latest engineers JDSU at 23dB.
Do you know roughly what your line length is from the cabinet?
650m(ish), engineer said 19dB attenuation, though I can now see that's a mix of 15.4dB and 39.2dB in each of the downstream bands.

Otherwise b) A.N Other c) Since April d) No, rock solid since installed.
Anonymous
(Unregistered)Wed 07-Sep-11 17:54:16
Print Post

Re: More FTTC line stats


[re: mr_bean] [link to this post]
 
Thanks for responding mr_bean,

Very useful info to use as a comparison against my stats for if/when I manage to get a spare modem to flash.

One other thing:-
Is your modem a SP06, SP10, or SP10 v 2B firmware version & which "unlocked" firmware version have you flashed it with?

Is anyone else interested in experimenting & posting their stats, especially someone who doesn't achieve the full 40 Mb at their home, who maybe has a confirmed line length of say 800m to 1200m from the FTTC cabinet?


Pauline.
Standard User mr_bean
(member) Wed 07-Sep-11 18:55:45
Print Post

Re: More FTTC line stats


[re: Anonymous] [link to this post]
 
Not a 2B/V. I used the unlocked version of SP10 as that was what it had on it.
Anonymous
(Unregistered)Wed 07-Sep-11 19:01:52
Print Post

Re: More FTTC line stats


[re: mr_bean] [link to this post]
 
Thanks again mr_bean.

Pauline.
Standard User asbokid
(newbie) Wed 07-Sep-11 19:18:43
Print Post

Graphing FTTC line stats


[re: mr_bean] [link to this post]
 
Hi Mr Bean,

Have you seen the nifty Router-Stats tool that Tom Hill has developed for the Broadcom xDSL devices supplied by Sky Broadband? [1]

All those Sky-supplied devices appear to be ADSL2+, so Tom's tool would need a little patching to graph the VDSL2 stats from the Huawei HG612.

At the moment I have been chomping the output from the command 'xdslcmd info --linediag' and feeding it to gnu-plot, the open source graphing tool.

Don't suppose I can scrounge some "xdslcmd info --linediag" statistics from you to test that patching? I will return some graphs for your approval smile

The JPEG stats graphs generated from gnu-plot are very similar to these ones [2] While the ones from the Huawei are technically correct they need some prettifying to be as nice as the Router-Stats output.

cheers,
asbokid

[1] http://www.ph-mb.com/products/srt/about
[2] http://www.sherrardinteriors.com/pH-Mb/sky_router_to...

Edited by asbokid (Wed 07-Sep-11 19:19:09)

Standard User lockyatlrg
(fountain of knowledge) Wed 07-Sep-11 19:20:30
Print Post

Re: More FTTC line stats


[re: mr_bean] [link to this post]
 
line length 350/400 meters from the cab with 0.5 copper, the bt man said I could get 52mb down if the line was unlocked 8c profile, What speed do you think I would get with 17a profile?

I can't see on that site where to hack the modem?

BT Infinity
ROUTER:-Netgear WNDR37AV
Sync 40000D 10000U

Edited by lockyatlrg (Wed 07-Sep-11 23:20:24)

Standard User adebov
(eat-sleep-adslguide) Wed 07-Sep-11 19:43:27
Print Post

Re: More FTTC line stats


[re: lockyatlrg] [link to this post]
 
In reply to a post by lockyatlrg:
the bt man sai dI could get 52mb down if the line was unlocked, What speed do you think I would get with 17a profile?

52Mbps

Ade

vDSL2 FTTC Infinity with BT
DL Sync not a clue, but DL speed is around 37Mbps
UL Sync again; not a clue
Standard User RobertoS
(sensei) Wed 07-Sep-11 20:00:22
Print Post

Re: More FTTC line stats


[re: adebov] [link to this post]
 
In reply to a post by adebov:
In reply to a post by lockyatlrg:
the bt man sai dI could get 52mb down if the line was unlocked, What speed do you think I would get with 17a profile?

52Mbps
ROFL!

My broadband basic info/help site - www.robertos.me.uk
My domains,website and mail hosting - Tsohost. Internet connection - IDNet Home Starter Fibre. Live BQM.

"Where talent is a dwarf, self-esteem is a giant." - Jean-Antoine Petit-Senn.
Standard User Johnct
(committed) Wed 07-Sep-11 23:08:02
Print Post

Re: More FTTC line stats


[re: lockyatlrg] [link to this post]
 
well with you being a computer tech i am surprized you dont see it !
Standard User lockyatlrg
(fountain of knowledge) Wed 07-Sep-11 23:15:27
Print Post

Re: More FTTC line stats


[re: RobertoS] [link to this post]
 
No...

My line is using 8c, I can get 52mbs with 8c

Max Attainable D/S: 52,000

I ment with 17a hard to see? or are you blind or drunk?

Mr bean him self says he may get 60mbs with 17a profile, and 41mbs with current 8c.

BT Infinity
ROUTER:-Netgear WNDR37AV
Sync 40000D 10000U

Edited by lockyatlrg (Wed 07-Sep-11 23:21:33)

Standard User orly
(fountain of knowledge) Wed 07-Sep-11 23:16:08
Print Post

Re: More FTTC line stats


[re: lockyatlrg] [link to this post]
 
Few p!ss takes going on down the thread, but assuming 52Mb is the max on the current profile, it could be significantly higher on this other profile that is being touted.

---
> Comparison chart of FTTC ISPs
> Got FTTC? Complete the survey

BT Infinity 8th July 2010
(NIBA)
600m (approx) to cabinet
23.5mbit down / 8mbit up

Edited by orly (Wed 07-Sep-11 23:36:58)

Standard User RobertoS
(sensei) Wed 07-Sep-11 23:25:28
Print Post

Re: More FTTC line stats


[re: lockyatlrg] [link to this post]
 
In reply to a post by lockyatlrg:
No...

My line is using 8c, I can get 52mbs with 8c

Max Attainable D/S: 52,000

I ment with 17a hard to see? or are you blind or drunk?

Mr bean him self says he may get 60mbs with 17a profile, and 41mbs with current 8c.
Maybe if you had made yourself clear in the first place it would have been better.

As for the personal insults, please grow up.

My broadband basic info/help site - www.robertos.me.uk
My domains,website and mail hosting - Tsohost. Internet connection - IDNet Home Starter Fibre. Live BQM.

"Where talent is a dwarf, self-esteem is a giant." - Jean-Antoine Petit-Senn.
Standard User lockyatlrg
(fountain of knowledge) Wed 07-Sep-11 23:26:45
Print Post

Re: More FTTC line stats


[re: RobertoS] [link to this post]
 
You grow up please read the post to start with before the joke.

I DID SAY WITH CURRENT PROFILE AT 52mbs AND WHAT WOULD I GET WITH 17a, get it?

I asked a question if I was wrong or write then so be it, but when people jump on me without reading the post what do you expect. to be honest I would prefer an answer from mr bean he seems to be pretty clued up on this.

thank you.

BT Infinity
ROUTER:-Netgear WNDR37AV
Sync 40000D 10000U

Edited by lockyatlrg (Wed 07-Sep-11 23:30:22)

Standard User RobertoS
(sensei) Wed 07-Sep-11 23:35:23
Print Post

Re: More FTTC line stats


[re: lockyatlrg] [link to this post]
 
In reply to a post by lockyatlrg:
you grow up please read the post to start with before the joke

I DID SAY WITH CURRENT PROFILE AT 52mbs AND WHAT WOULD I GET WITH 17a, get it?
are you blind or drunk?
Incidentally, as according to what you are saying now your post at the time was perfectly OK , what is "Edited by lockyatlrg (Wed 07-Sep-11 23:21:33)" about?

My broadband basic info/help site - www.robertos.me.uk
My domains,website and mail hosting - Tsohost. Internet connection - IDNet Home Starter Fibre. Live BQM.

"Where talent is a dwarf, self-esteem is a giant." - Jean-Antoine Petit-Senn.
Standard User RobertoS
(sensei) Wed 07-Sep-11 23:37:50
Print Post

Re: More FTTC line stats


[re: lockyatlrg] [link to this post]
 
I see you have also altered your latest post whilst I was drafting my reply to it. You really are being a little disreputable in my opinion.

My broadband basic info/help site - www.robertos.me.uk
My domains,website and mail hosting - Tsohost. Internet connection - IDNet Home Starter Fibre. Live BQM.

"Where talent is a dwarf, self-esteem is a giant." - Jean-Antoine Petit-Senn.
Standard User lockyatlrg
(fountain of knowledge) Wed 07-Sep-11 23:39:46
Print Post

Re: More FTTC line stats


[re: RobertoS] [link to this post]
 
Care to see the post before the edit?, I changed the first part to line length from distance of.

It's still clear to see what I was asking.

Anyway I'm not going to get into silly little arguments with people, it's pointless, I just wanted to know my attainable rate with 17a.

That is all.

BT Infinity
ROUTER:-Netgear WNDR37AV
Sync 40000D 10000U

Edited by lockyatlrg (Wed 07-Sep-11 23:41:17)

Standard User RobertoS
(sensei) Wed 07-Sep-11 23:40:08
Print Post

Re: More FTTC line stats


[re: lockyatlrg] [link to this post]
 
In reply to a post by lockyatlrg:
You grow up please read the post to start with before the joke
Drat tongue ! All I needed to do was ask why you have got so heated and rude about what you realise was a joke.

My broadband basic info/help site - www.robertos.me.uk
My domains,website and mail hosting - Tsohost. Internet connection - IDNet Home Starter Fibre. Live BQM.

"Where talent is a dwarf, self-esteem is a giant." - Jean-Antoine Petit-Senn.
Standard User lockyatlrg
(fountain of knowledge) Wed 07-Sep-11 23:43:36
Print Post

Re: More FTTC line stats


[re: RobertoS] [link to this post]
 
The joke wasn't needed really was it?, the few replies came across as if I was being thick and not seeing something obvious, when in fact the question asked was valid and did not warrant a response I got to be honest.

BT Infinity
ROUTER:-Netgear WNDR37AV
Sync 40000D 10000U
Standard User griff_90
(fountain of knowledge) Thu 08-Sep-11 12:54:19
Print Post

How do my stats look?


[re: mr_bean] [link to this post]
 
http://img.photobucket.com/albums/v427/griff_90/1de0...

I know that my DS attenuation, measured via the JDSU, is/was 10dB.
Standard User RobertoS
(sensei) Thu 08-Sep-11 13:12:57
Print Post

Re: How do my stats look?


[re: griff_90] [link to this post]
 
That doesn't look healthy to me.

The power readings may be suspect, but if not could account for the low speed figures. On 10dB attenuation you should be connected at 40000/10000. As a comparison, I am on those sync's, (according to the JDSU and a never-flickering IP Profile of 38717), with the JDSU also giving 17dB attenuation at 0.6km compared to you.

My broadband basic info/help site - www.robertos.me.uk
My domains,website and mail hosting - Tsohost. Internet connection - IDNet Home Starter Fibre. Live BQM.

"Where talent is a dwarf, self-esteem is a giant." - Jean-Antoine Petit-Senn.
Standard User orly
(fountain of knowledge) Thu 08-Sep-11 13:16:48
Print Post

Re: How do my stats look?


[re: griff_90] [link to this post]
 
Doesn't appear to be reporting some of the figures correctly but the speeds look OK.

Errors looks a bit nasty but depends how long you've been connected non-stop.

---
> Comparison chart of FTTC ISPs
> Got FTTC? Complete the survey

BT Infinity 8th July 2010
(NIBA)
600m (approx) to cabinet
23.5mbit down / 8mbit up
Standard User asbokid
(learned) Thu 08-Sep-11 13:18:16
Print Post

BBU port on the HG612


[re: MHC] [link to this post]
 
Ahh.. that's makes more sense, MHC.

I managed to source one of those unusual JST-XH connectors and fashioned an RS232 cable out of it that fits the BBU port. There's a (hidden) option for testing the BBU port in the /bin/equipcmd tool, but it still doesn't work!

Text
1
23
45
67
89
1011
1213
1415
16
$ telnet 192.168.1.1
Trying 192.168.1.1...Connected to 192.168.1.1.
Escape character is '^]'. 
Welcome Visiting Huawei  Home GatewayCopyright by Huawei Technologies Co., Ltd.
Login:adminPassword:admin
ATP>sh 
BusyBox v1.9.1 (2010-10-15 17:59:06 CST) built-in shell (ash)Enter 'help' for a list of built-in commands.
 # equipcmd 5
Time out, serial COM test failed!

Edited by asbokid (Thu 08-Sep-11 13:57:03)

Standard User griff_90
(fountain of knowledge) Thu 08-Sep-11 13:21:33
Print Post

Re: How do my stats look?


[re: orly] [link to this post]
 
It was only connected for about 2 minutes before the screenshot.

I had issues back in January which resulted in two OR engineers attending (trainer and trainee). They spent four hours checking all the internal wiring for faults but found none at all yet everytime they connected the JDSU and ran tests the errors would immediately appear and increase during the course of the test. I seem to recall each test taking about 10 minutes, possibly 15 minutes.

I was told they had no explanation for the errors and after spending half the day with me they left saying they'd done all they could.
Standard User asbokid
(learned) Thu 08-Sep-11 13:28:45
Print Post

Re: How do my stats look?


[re: griff_90] [link to this post]
 
Hi Griff_90..

Thanks for posting your stats (and for offering to take a photo of the PCB on the 2B).

There is a dearth of data for VDSL2 Profile 8c performance in the UK. Pretty impressive figures you're getting there.. I think yours are the best I've seen..

Any chance you would get a telnet shell on the Huawei and issue "xdslcmd info --pbParams" and "xdslcmd info --linediag", to get all the stats..

The output from the latter command runs to several thousand lines of data, so only good for copying to http://codepaste.net/

cheers,
asbokid
Standard User MHC
(legend) Thu 08-Sep-11 13:29:37
Print Post

Re: More FTTC line stats


[re: asbokid] [link to this post]
 
Have you managed to understand the power levels?

Griff_90 has published a screen shot with a reading of 5.2dBmV

Roughly converting 5.2 dBmV to mV gives around 4mV ! Power levels will be well down in the microwatt region!





~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


M H C


taurus excreta cerebrum vincit
Standard User griff_90
(fountain of knowledge) Thu 08-Sep-11 13:31:16
Print Post

Re: How do my stats look?


[re: asbokid] [link to this post]
 
Hi asbokid,

Cheers for your helpful guide and comments.

I'd be happy to get the relevant information via telnet later this afternoon and post back.
Standard User orly
(fountain of knowledge) Thu 08-Sep-11 13:39:39
Print Post

Re: How do my stats look?


[re: asbokid] [link to this post]
 
Is the only way in, after changing the firmware, to unplug and connect direct to the LAN2 port?

Or can you do it when hooked up to LAN1 via the hub?

---
> Comparison chart of FTTC ISPs
> Got FTTC? Complete the survey

BT Infinity 8th July 2010
(NIBA)
600m (approx) to cabinet
23.5mbit down / 8mbit up
Standard User asbokid
(learned) Thu 08-Sep-11 13:50:06
Print Post

Re: How do my stats look?


[re: orly] [link to this post]
 
hi orly.

it depends how you configure the modem...

this one has just a single rj45 that's plugged into LAN1.. but i took it off fast bridging and obtain the ppp interface on the huawei itself.
Standard User asbokid
(learned) Thu 08-Sep-11 13:56:40
Print Post

Re: How do my stats look?


[re: griff_90] [link to this post]
 
hi griff,

i've got some simple scripts which take the output data from the xdslcmd info --linediag command and pipe it to the open source gnu-plot tool [2]. Gnu-plot uses the data to produce line/bar graphs out of them.. the graphs looks something like this [2]. they might show something interesting.

[1] http://www.gnuplot.info/
[2] http://www.sherrardinteriors.com/pH-Mb/sky_router_to...
Standard User orly
(fountain of knowledge) Thu 08-Sep-11 14:00:54
Print Post

Re: How do my stats look?


[re: asbokid] [link to this post]
 
http://i.imgur.com/zAVTF.jpg

---
> Comparison chart of FTTC ISPs
> Got FTTC? Complete the survey

BT Infinity 8th July 2010
(NIBA)
600m (approx) to cabinet
23.5mbit down / 8mbit up
Standard User griff_90
(fountain of knowledge) Thu 08-Sep-11 14:26:51
Print Post

Re: How do my stats look?


[re: asbokid] [link to this post]
 
Here's another screenshot showing the increase in errors since my original screenshot an hour and a half ago -

12:50 - http://img.photobucket.com/albums/v427/griff_90/1de0...

14:20 - http://img.photobucket.com/albums/v427/griff_90/5865...

As for the infromation you asked me to obtain via Telnet I'm having a problem. I've installed the Telnet client in Windows 7 and I've set the firewall to "low" in the modem CP but when I attempt to connect to the modem it tries and fails saying a connection could not be established. Something I'm doing wrong?
Standard User asbokid
(learned) Thu 08-Sep-11 14:32:56
Print Post

Re: How do my stats look?


[re: griff_90] [link to this post]
 
Cheers for the screenshots, griff_90!

You can (and should) leave the firewall on "Standard" (or higher). Set the level too low and rogues can log into the device from the WAN-side. That said, if the firewall level is set back to "BT" then it will lock the device again!

I'm afraid don't know much about Windows 7. I have used the putty telnet (and ssh) client for Windows. That seems to work fine..

http://www.chiark.greenend.org.uk/~sgtatham/putty/

As for interpreting the figures, please don't look to me for an explanation as I know next to nothing about line statistics... But there are plenty of experts on here who do!......

cheers.

Edited by asbokid (Thu 08-Sep-11 14:37:42)

Standard User asbokid
(learned) Thu 08-Sep-11 14:34:55
Print Post

Re: How do my stats look?


[re: orly] [link to this post]
 
Thanks Orly!

hmm.. wonder where your bandwidth is being lost.. don't suppose you fancy getting a telnet shell and issuing

# xdslcmd info --pbParams and
# xdslcmd info --linediag

cheers
Standard User griff_90
(fountain of knowledge) Thu 08-Sep-11 14:47:47
Print Post

Re: How do my stats look?


[re: asbokid] [link to this post]
 
I raised the firewall level from low to standard and that seemed to do the trick -

http://img.photobucket.com/albums/v427/griff_90/2acb...

Does that look like I'm connected via telnet correctly? What is the exact command(s) I need to enter?
Standard User asbokid
(learned) Thu 08-Sep-11 14:53:30
Print Post

Re: How do my stats look?


[re: griff_90] [link to this post]
 
Yeh! You're in!

At the ATP> prompt.. you need to get a shell.. and then you can run those two commands..

If you want to save the line stats data and there is loads of it, then putty should be configured to log the session to a file.. the saved data file can be used to generate graphs..

Text
1
23
45
67
89
1011
1213
1415
1617
1819
2021
2223
2425
2627
28
$ telnet 192.168.1.1
Trying 192.168.1.1...Connected to 192.168.1.1.
Escape character is '^]'. 
Welcome Visiting Huawei  Home GatewayCopyright by Huawei Technologies Co., Ltd.
 Login:admin
Password:*****  [admin] 
ATP>sh   [for shell] 
BusyBox v1.9.1 (2010-10-15 17:59:06 CST) built-in shell (ash)Enter 'help' for a list of built-in commands.
 # xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY statusStatus: Showtime
Retrain Reason: 8000Max:    Upstream rate = 964 Kbps, Downstream rate = 15084 Kbps
Path:   0, Upstream rate = 968 Kbps, Downstream rate = 14017 Kbps 
(snipped..) 
# xdslcmd info --linediag 
(snipped..)


P.S. the telnet shell is configured to automatically log out after a very short period of inactivity (~60 seconds).. this is infuriating(!).. there is a way around it, but it involves recompiling busybox..

cheers!

Edited by asbokid (Thu 08-Sep-11 14:59:45)

Anonymous
(Unregistered)Thu 08-Sep-11 14:58:15
Print Post

Re: How do my stats look?


[re: orly] [link to this post]
 
Hi orly,

Your stats are really interesting to me.

I am a bit further from the cabinet than you are, & my download speeds are a bit slower than yours.

Have you always had those sort of download speeds since FTTC was installed, or like my connection, did they start off much higher for a while (say 34-35Mb) & have deteriorated over a period of time?

Others at 600m from the cab like you seem to be achieving much higher speeds, more or less the full whack with stable connections in most cases.

As mentioned by asbokid, it would be really interesting to see your stats from telnet & xdslcmd to compare with others & see where the issue might be.


Pauline.
Standard User griff_90
(fountain of knowledge) Thu 08-Sep-11 15:02:36
Print Post

Success! Telnet log..


[re: asbokid] [link to this post]
 
Thanks! It worked fine!

Telnet/Putty log -

Log File

Edited by griff_90 (Thu 08-Sep-11 15:04:04)

Standard User orly
(fountain of knowledge) Thu 08-Sep-11 15:04:41
Print Post

Re: How do my stats look?


[re: Anonymous] [link to this post]
 
Started at about 27Mbit and it's gradually moved down to the 23-24Mbit I currently receive. It's been stable at this speed for a good few months now.

---
> Comparison chart of FTTC ISPs
> Got FTTC? Complete the survey

BT Infinity 8th July 2010
(NIBA)
600m (approx) to cabinet
23.5mbit down / 8mbit up
Standard User asbokid
(learned) Thu 08-Sep-11 15:06:20
Print Post

Re: Success! Telnet log..


[re: griff_90] [link to this post]
 
yeah! aww... i can't access it yet though.. you're welcome to email the log if you want.. email address as per my profile.. i will return the data graphed for you, or if you want the gnuplot scripts to graph it yourself, you're welcome the scripts are pretty shoddy though..the xdslcmd data has to be manually tidied up before gnuplot will even accept it.
Standard User griff_90
(fountain of knowledge) Thu 08-Sep-11 15:10:00
Print Post

Re: Success! Telnet log..


[re: asbokid] [link to this post]
 
Just emailed you the log file.

If you could graph the data for me I'd appreciate it.
Standard User orly
(fountain of knowledge) Thu 08-Sep-11 15:13:50
Print Post

Re: How do my stats look?


[re: asbokid] [link to this post]
 
need a few more directions to do that

what do I put in telnet to establish the connection?

---
> Comparison chart of FTTC ISPs
> Got FTTC? Complete the survey

BT Infinity 8th July 2010
(NIBA)
600m (approx) to cabinet
23.5mbit down / 8mbit up
Standard User griff_90
(fountain of knowledge) Thu 08-Sep-11 15:22:36
Print Post

Re: How do my stats look?


[re: orly] [link to this post]
 
Are you using Windows client? If so then you need to enter "o 192.168.1.1" with the "o" being the open command.
Anonymous
(Unregistered)Thu 08-Sep-11 15:22:59
Print Post

Re: How do my stats look?


[re: orly] [link to this post]
 
Thanks orly,

That seems quite poor for only 600m from the cab.

Are you 100% convinced that 600m is about right & 100% convinced you know which cab you are connected to?

I have read of others who can see a nearby cab, but are actually connected to a cab that is further away.

I know exactly which cab I am connected to & I would estimate it to be 800m or so away from my house.
My current download speed are about 20Mb.

Pauline.
Standard User orly
(fountain of knowledge) Thu 08-Sep-11 15:27:16
Print Post

Re: How do my stats look?


[re: Anonymous] [link to this post]
 
I asked the engineer at the time which cab it was. My street is a cul de sac, so I basically drive to the end, turn right and then it's a straight run to the cabinet which is at the far end. The distance is roughly 600m assuming the cable follows this route too.

Annoyingly there is a cabinet outside the local school which is about 200m away

---
> Comparison chart of FTTC ISPs
> Got FTTC? Complete the survey

BT Infinity 8th July 2010
(NIBA)
600m (approx) to cabinet
23.5mbit down / 8mbit up
Standard User orly
(fountain of knowledge) Thu 08-Sep-11 15:53:15
Print Post

Re: How do my stats look?


[re: griff_90] [link to this post]
 
Tried telnet and putty. telnet just says it fails to connect. Putty closes as soon as you attempt to connect.

---
> Comparison chart of FTTC ISPs
> Got FTTC? Complete the survey

BT Infinity 8th July 2010
(NIBA)
600m (approx) to cabinet
23.5mbit down / 8mbit up
Standard User griff_90
(fountain of knowledge) Thu 08-Sep-11 15:54:01
Print Post

Re: How do my stats look?


[re: orly] [link to this post]
 
What have you set the Firewall level as in the modem?
Standard User orly
(fountain of knowledge) Thu 08-Sep-11 15:59:23
Print Post

Re: How do my stats look?


[re: griff_90] [link to this post]
 
Was standard. Tried it off too. Neither makes a difference.

---
> Comparison chart of FTTC ISPs
> Got FTTC? Complete the survey

BT Infinity 8th July 2010
(NIBA)
600m (approx) to cabinet
23.5mbit down / 8mbit up
Anonymous
(Unregistered)Thu 08-Sep-11 16:05:56
Print Post

Re: How do my stats look?


[re: orly] [link to this post]
 
telnet 192.168.1.1 to go directly to the modem
Standard User griff_90
(fountain of knowledge) Thu 08-Sep-11 16:08:53
Print Post

Re: How do my stats look?


[re: orly] [link to this post]
 
All I can tell you is that I used Putty (in Telnet mode) to connect to 192.168.1.1 and it immediately prompted me for the admin username and password.

http://img.photobucket.com/albums/v427/griff_90/2acb...
Standard User RobertoS
(sensei) Thu 08-Sep-11 16:12:47
Print Post

Re: How do my stats look?


[re: asbokid] [link to this post]
 
In reply to a post by asbokid:
Hi Griff_90..

Thanks for posting your stats (and for offering to take a photo of the PCB on the 2B).

There is a dearth of data for VDSL2 Profile 8c performance in the UK. Pretty impressive figures you're getting there.. I think yours are the best I've seen..
How do you come to that conclusion? He says he is on 10dB attenuation and that shows well under 40Mbps connection speed, whereas most at 500-600 metres like myself, on attenuation 17dB, get the full 40000.

My broadband basic info/help site - www.robertos.me.uk
My domains,website and mail hosting - Tsohost. Internet connection - IDNet Home Starter Fibre. Live BQM.

"Where talent is a dwarf, self-esteem is a giant." - Jean-Antoine Petit-Senn.
Anonymous
(Unregistered)Thu 08-Sep-11 16:14:59
Print Post

Re: How do my stats look?


[re: orly] [link to this post]
 
If you have spare Lan ports on your router, I have read somewhere that you can leave the normal cable from the router connected to Lan1 of the modem as usual & simply attach another cable from a spare router port to Lan2 on the modem & then you can browse the internet & also see the modem interface at the same time.

I don't know if it actually works though as I don't have an unlocked modem to try it with yet.

Pauline.
Standard User griff_90
(fountain of knowledge) Thu 08-Sep-11 16:22:54
Print Post

Re: How do my stats look?


[re: RobertoS] [link to this post]
 
I actually said my Attentuation "is/was".

I know it was 10dB in January as I saw the relevant screen on the JDSU myself. It may have changed since.

Also how do you come to the conclusion that 38,000 is "well under" 40,000?!?

Edited by griff_90 (Thu 08-Sep-11 16:26:28)

Standard User orly
(fountain of knowledge) Thu 08-Sep-11 16:37:13
Print Post

Re: How do my stats look?


[re: Anonymous] [link to this post]
 
You can get to the modem configuration but it doesn't appear to allow you online

---
> Comparison chart of FTTC ISPs
> Got FTTC? Complete the survey

BT Infinity 8th July 2010
(NIBA)
600m (approx) to cabinet
23.5mbit down / 8mbit up
Standard User orly
(fountain of knowledge) Thu 08-Sep-11 16:56:51
Print Post

Re: How do my stats look?


[re: griff_90] [link to this post]
 
Can't get it going on mine at all. Is yours an SP06 or SP10 modem? Mine is SP06 which I believe is the oldest version that was widely distributed.

One benefit has been seeing the sync and noise margin in real time as well as the "attainable rate"

I've been keeping track of my IP Profile for the past few weeks on the BT speedtester.

It was previously 23179 and then moved to 23317. Today (at around 1.45pm) it had bumped up to 23487, with a sync of 24265 according to the modem. In other words it was pretty stable at the lower end of 23xxx

As many are aware the SNR fluctuates during the day. At 4.45pm my SNR had crept up to 7dB so I reset the modem. My sync is now 25086 and the IP profile on the speedtester is 24281. In other words, by simply keeping an eye and resetting at an appropriate time, I've gained nearly 0.8Mbit in downstream. The target, as with ADSL, seems to be 6dB.

This is confirmed by the speedtester itself. The download speed achieved rose by 0.8Mbit. This may be insignificant in the grand scheme of things but for anyone looking to eek out the last drop of performance it can help get you that extra last few %

---
> Comparison chart of FTTC ISPs
> Got FTTC? Complete the survey

BT Infinity 8th July 2010
(NIBA)
600m (approx) to cabinet
23.5mbit down / 8mbit up

Edited by orly (Thu 08-Sep-11 16:58:20)

Standard User asbokid
(learned) Thu 08-Sep-11 16:58:15
Print Post

Re: Success! Telnet log..


[re: griff_90] [link to this post]
 
Cheers Griff!

I will graph them this eve. The tools to do so are open source (imagemagick and gnuplot) and both of those applications are built for windows, mac, linux, etc. so if anyone wants the graphing scripts, i will put them on some webspace.

I asked before, but maybe i can ask again.. is anyone interested in developing some graphing code that will run on the modem itself. It would present its graphical output via the Huawei's web interface. The new code would be written in C and built for the mips processor on an x86 PC using the open source GNU c cross compiler toolchain. Pre-built cross-compiler toolchains are available from here [1].

The graphing tool would either get its line stats from parsing the output of xdslcmd or it could query the xdsl driver directly. The main difficulty, as with all embedded code, is that it must be lean, and most image encoding libraries are enormous.. The libjpeg C function library can apparently be stripped down to the bare essentials, so it might just fit in the firmware.

Since the firmware in the hg612 shares much in common with other Broadcom-based devices including, it seems, the same ioctl() interface to the xDSL device driver, the graphing code should run, perhaps with a bit of fettling, on those devices, too.

cheers,
asbokid

[1] https://peterkieser.com/actiontec/source/
Standard User asbokid
(learned) Thu 08-Sep-11 17:02:55
Print Post

Re: How do my stats look?


[re: orly] [link to this post]
 
Hi Orly!

Ahh.. this is one of the few differences between SP06 and SP10..

SP06 doesn't have a telnet interface..

Instead, SP06 is running a ssh server (which SP10 is running in addition to telnet, but you need to tweak the SP10 firewall rules to gain access to ssh.)

Try again with putty, but select Secure SHell (ssh) as the protocol. That uses TCP port 22 rather than 23.

cheers,
asbokid
Standard User orly
(fountain of knowledge) Thu 08-Sep-11 17:04:18
Print Post

Re: How do my stats look?


[re: asbokid] [link to this post]
 
I'll give it a go and report back.

I assume the commands are similar...

sh for the shell and then the commands you posted earlier?

---
> Comparison chart of FTTC ISPs
> Got FTTC? Complete the survey

BT Infinity 8th July 2010
(NIBA)
600m (approx) to cabinet
23.5mbit down / 8mbit up
Standard User griff_90
(fountain of knowledge) Thu 08-Sep-11 17:04:49
Print Post

Re: How do my stats look?


[re: orly] [link to this post]
 
Mines SP10. That must be why.
Standard User asbokid
(learned) Thu 08-Sep-11 17:09:30
Print Post

Re: How do my stats look?


[re: orly] [link to this post]
 
exactly the same for ssh. same username, same password, same commands. if you want the stats graphed, don't forget to log the putty session.. cheers.
Standard User griff_90
(fountain of knowledge) Thu 08-Sep-11 17:19:56
Print Post

Re: How do my stats look?


[re: orly] [link to this post]
 
I've just added another Ethernet cable from my router to LAN2 and I can now access the internet and the Huawei Control panel at the same time.
Standard User RobertoS
(sensei) Thu 08-Sep-11 17:26:07
Print Post

Re: How do my stats look?


[re: griff_90] [link to this post]
 
In reply to a post by griff_90:
I actually said my Attentuation "is/was".

I know it was 10dB in January as I saw the relevant screen on the JDSU myself. It may have changed since.

Also how do you come to the conclusion that 38,000 is "well under" 40,000?!?
Attenuation basically doesn't change, and as 40Mbps is achievable at over 17dB, and bearing in mind a 3dB rise is double the loss, so my loss is more than 4 times yours, 38000 or so is well below 40000.

Either the reading is wrong, or there is a problem. What IP Profile does the BT speed test show?

My broadband basic info/help site - www.robertos.me.uk
My domains,website and mail hosting - Tsohost. Internet connection - IDNet Home Starter Fibre. Live BQM.

"Where talent is a dwarf, self-esteem is a giant." - Jean-Antoine Petit-Senn.
Standard User orly
(fountain of knowledge) Thu 08-Sep-11 17:26:37
Print Post

Re: How do my stats look?


[re: asbokid] [link to this post]
 
Ok I finally got in, after disabling the firewall.

Feel free to explain what I'm looking at!

The entire log for the 2 commands you asked for is here: http://awkm.org/fibresurvey/vdsl/putty.txt

---
> Comparison chart of FTTC ISPs
> Got FTTC? Complete the survey

BT Infinity 8th July 2010
(NIBA)
600m (approx) to cabinet
23.5mbit down / 8mbit up

Edited by orly (Thu 08-Sep-11 17:27:44)

Standard User griff_90
(fountain of knowledge) Thu 08-Sep-11 17:34:16
Print Post

Re: How do my stats look?


[re: RobertoS] [link to this post]
 
The BT Speedtester reports - IP Profile for your line is -36811 Kbps

As for there potentially being a problem what do you make of this -

http://img.photobucket.com/albums/v427/griff_90/0b5a...
Standard User asbokid
(learned) Thu 08-Sep-11 17:37:30
Print Post

Re: How do my stats look?


[re: orly] [link to this post]
 
Thanks, Orly. All 16440 lines of stats received! I will create the graphs tonight, along with Griff_90's. Remember to put the firewall back up again! cheers.

Edited by asbokid (Thu 08-Sep-11 17:39:20)

Standard User asbokid
(learned) Thu 08-Sep-11 17:46:39
Print Post

Re: More FTTC line stats


[re: MHC] [link to this post]
 
Hi MHC.. I don't understand the power level figure, nor many of the other stats either. This is really not my domain. Also, how is the atten. figure obtained? It's not just this modem, but all other Broadcom 63xx devices. They present a single figure for attenuation in their web interfaces, for either or both of the attenuation for the line and the signal attenuation. I guess the atten. figure must be based on an average as well, but I can't see how to calculate it. cheers.
Standard User griff_90
(fountain of knowledge) Thu 08-Sep-11 18:05:56
Print Post

Re: How do my stats look?


[re: orly] [link to this post]
 
Can you take another screenshot of the xDSL stats page for me so I can see your error count compared to mine? (I know you've already posted one sceenshot but that was with very little uptime)
Standard User lockyatlrg
(fountain of knowledge) Thu 08-Sep-11 19:37:01
Print Post

Re: More FTTC line stats


[re: mr_bean] [link to this post]
 
I have manage to unlock my modem.

stats here, I don't really understand the 2 different US and DS stats, my line is 350 meters to the cab by road so the true length may be closer to 400ish.

etrain Reason: 0
Max: Upstream rate = 17307 Kbps, Downstream rate = 48560 Kbps
Path: 0, Upstream rate = 9995 Kbps, Downstream rate = 39999 Kbps

Discovery Phase (Initial) Band Plan
US: (0,95) (696,1183)
DS: (32,687) (1192,1627)
Medley Phase (Final) Band Plan
US: (0,95) (696,1183)
DS: (32,687) (1192,1627)
VDSL Port Details Upstream Downstream
Attainable Net Data Rate: 17307 kbps 48560 kbps
Actual Aggregate Tx Power: - 17.7 dBm 7.7 dBm
================================================== ==========================
VDSL Band Status U0 U1 U2 U3 D1 D2 D3
Line Attenuation(dB): 3.4 13.4 N/A N/A 7.8 16.6 N/A

Signal Attenuation(dB): 0.0 13.5 N/A N/A 7.8 16.6 N/A

SNR Margin(dB): 16.7 16.7 N/A N/A 8.5 8.5 N/A

TX Power(dBm): -28.3 -18.0 N/A N/A 6.1 2.6 N/A

Statistics
Help

Path 0

Path 1
Downstream Upstream Downstream Upstream
Line rate (kbit/s) 39999 9995 0 0
CRC errors 0 0 0 0
FEC errors 15 0 0 0
HEC errors 21 0 0 0



Also since doing this, I have enabled DMZ and set the IP of my router for it, and disabled the firewall as with having a router connected to the modem you don't need 2 right?
I have been messing with a few other settings and getting MUCH higher upload speeds!

This is on the BBmax test

Download Speed: 37482 kbps (4685.3 KB/sec ) Upload Speed: 8968 kbps (1121 KB/sec )

Just tried BT speedtest and get the same results, don't know if this is a coincidence or not?

BT Infinity
ROUTER:-Netgear WNDR37AV
Sync 40000D 10000U

Edited by lockyatlrg (Thu 08-Sep-11 19:48:03)

Standard User orly
(fountain of knowledge) Thu 08-Sep-11 19:53:09
Print Post

Re: How do my stats look?


[re: griff_90] [link to this post]
 
Hi,

Just logged back onto the modem there. Been up for about 3 hours now I'd guess. I think the counter is in seconds.

http://i.imgur.com/Xdqka.jpg

As you can see the errors seem to be significantly lower than yours.

Curiously, my SNR is now dropping so I have the strange situation where my actual line rate (25086) is higher than the max attainable one (24208). Perhaps a re-train doesn't occur until 0dB or 3dB. Anyone have a clue?

---
> Comparison chart of FTTC ISPs
> Got FTTC? Complete the survey

BT Infinity 8th July 2010
(NIBA)
600m (approx) to cabinet
23.5mbit down / 8mbit up
Standard User asbokid
(learned) Thu 08-Sep-11 20:49:47
Print Post

Re: How do my stats look?


[re: orly] [link to this post]
 
Hi Orly.. I forgot to ask...

there's one more (very useful) dataset that can be graphed.. "bit loading" or "bit depth".. that is the number of bits that are being encoded in the QAM stage for each of the subcarriers.

You can get that statistic (for all the tones).. using "xdslcmd info --Bits" (case-sensitive: capital 'B')

cheers.
Standard User orly
(fountain of knowledge) Thu 08-Sep-11 21:20:38
Print Post

Re: How do my stats look?


[re: asbokid] [link to this post]
 
asbokid has graphed whatever it was I sent him and produced this:

http://img846.imageshack.us/img846/3836/statsop.jpg

Now i'm not sure what I'm looking at but does it appear a bit strange to anyone else? Seems the first image roughly correlates in shape to the 2nd one, except for the big "gash" in it.

---
> Comparison chart of FTTC ISPs
> Got FTTC? Complete the survey

BT Infinity 8th July 2010
(NIBA)
600m (approx) to cabinet
23.5mbit down / 8mbit up
Standard User asbokid
(learned) Thu 08-Sep-11 22:03:45
Print Post

Re: How do my stats look?


[re: orly] [link to this post]
 
The QLN graph shows a spectral analysis of the measured noise.

ON your line it shows moderate noise that is at its worst around DMT# 240.

VDSL2 Profile 8c uses tone spacings of 4.3125KHz so the worst of the noise is focussed around ~1MHz.

That frequency is at the top end of the band allocated to ADSL1/2.. So it may be crosstalk from other broadband users whose local loops are in the same cable bundle as your own loop..

If you send me the xdslcmd info --Bits data, a graph will show what impact that noise is actually having on the bit depth and thus your overall bandwidth.

cheers

Edited by asbokid (Thu 08-Sep-11 22:11:02)

Standard User griff_90
(fountain of knowledge) Thu 08-Sep-11 22:30:16
Print Post

Re: How do my stats look?


[re: orly] [link to this post]
 
Here's my graph in comparison -

http://img.photobucket.com/albums/v427/griff_90/2755...
Standard User mr_bean
(member) Thu 08-Sep-11 23:16:29
Print Post

Re: How do my stats look?


[re: orly] [link to this post]
 
asbokid has graphed whatever it was I sent him and produced this:

http://img846.imageshack.us/img846/3836/statsop.jpg

Now i'm not sure what I'm looking at but does it appear a bit strange to anyone else? Seems the first image roughly correlates in shape to the 2nd one, except for the big "gash" in it.
I'm just trying to get my head around it.

If you really want to make your head hurt there's a copy of ITU spec G993.2 (aka VDSL) online.

BT are using VDSL profile 8c, annex B and according to this document band plan 997 truncated at 7.05MHz.

This uses tones 32-695 for the 1st downstream band, 696 to 1182 for upstream, then 1183 to 1634 downstream again.

The modem reports what tones it's using with "xdslcmd info --show"
Discovery Phase (Initial) Band Plan
US: (0,95) (696,1183)
DS: (32,687) (1192,1627)
Medley Phase (Final) Band Plan
US: (0,95) (696,1183)
DS: (32,687) (1192,1627)


What I don't quite understand is what the initial US: 0,95) is about as it overlaps the (32, 687) interval - there is the US0 band (i.e same part of the spectrum as ADSL upstream) but I don't know what BT are doing with that (I don't think they support it though). Note that using US0 is needed for supporting long lines otherwise the upstream tones (between 3MHz & 5.1MHz) are going to get lost due to attenuation. If BT aren't using the US0 band then that would be one reason why FTTC lines will not "degrade to ADSL performance" on very long lines.

I also don't understand why the last upstream tone is 1183 as the ITU spec says 1182.

Finally - why the gaps? 688-695 appear not to be used, nor 1184-1191, maybe the modem decided it didn't need them to attain the required data rate??

So the graphs. I think asbokid has already said but they are 1) line SNR (in dB i presume) per tone but the "gash" is the upstream tones where the modem doesn't report a SNR. Note not SNRM.

2) Tone attenuation (or rather negative log of) per tone, again gap for the U/S tones.

3) Line noise. In the higher tones this nicely mirrors the SNR as you'd expect. In the lower tone it doesn't - I suspect this is due to spectral power management.
Standard User mr_bean
(member) Fri 09-Sep-11 08:17:45
Print Post

Re: How do my stats look?


[re: RobertoS] [link to this post]
 
..He says he is on 10dB attenuation and that shows well under 40Mbps connection speed..
It's a bit odd. What's become obvious now that we have a few SNR graphs is that griff_90 has a noisy line - at least compared to mine and Orly's.

If you look at his noise graph he's getting measurements of about -115 to -120 dBm/Hz whereas Orly's (and my - will post graphs later) is -135dBm/Hz.

BUT his SNRs are actually better than either mine or Orly's, presumably because of a short line and low attenuations, so he really should be getting a better sync.

I note that the attainable rate in the pic he posted was 44.5Mbps whereas his sync was only 38Mbps - it looks like he has a bit of a noisy line with some diurnal variation which ultimately is hurting his max sync a bit.

Note that VDSL because of the large bandwidths is sensitive to small drops in the reported SNRM figures. On mine an 0.3dB drop in SNRM wiped over 600Kbps off the attainable speed.

griff_90 - do you know anything about the line. Length? New/Old? Copper/Aluminium? Overhead/Underground?

Is there any noise/crackling on the phone that you could use as an excuse to get it checked?

Mind you - you're getting close to 40Mbps anyway, it's not going to actually worry you until/unless the 80Mbps profile 17a product comes along.
Standard User RobertoS
(sensei) Fri 09-Sep-11 08:54:43
Print Post

Re: How do my stats look?


[re: mr_bean] [link to this post]
 
Thanks mr_bean. You and asbokid are doing a great job on this, aided by a few others in your footsteps, with far greater technical competence than myself.

All I'm doing is watching developments and picking out anomalies such as this one, without going too deep into the technicalities. At the moment I don't have the mental energy to assimilate the fine detail.

My broadband basic info/help site - www.robertos.me.uk
My domains,website and mail hosting - Tsohost. Internet connection - IDNet Home Starter Fibre. Live BQM.

"Where talent is a dwarf, self-esteem is a giant." - Jean-Antoine Petit-Senn.
Standard User griff_90
(fountain of knowledge) Fri 09-Sep-11 11:35:42
Print Post

Re: How do my stats look?


[re: mr_bean] [link to this post]
 
Hi mr_bean and thanks for the comments..

A little background for you.

I had FTTC/VDSL2 installed in August 2010. The JDSU showed the full 40k/10k sync and my IP Profile was a nice 38717kbps with latency under 10ms. It stayed like this until December when "all hell broke loose" and I suffered from constant disconnections over the Christmas/New Year period. I had no Christmas lights and I know for certain my Hindu neighbours didn't have their property festooned with lights either.

In January two OR engineers spent an entire afternoon at my property testing all the internal wiring, sockets, and performing repeated tests on the line. Each time they performed a test (which took about 10 minutes) the error count kept rising. They changed something over in the distribution point in the communal hallway (I live in apartments) and carried on performing tests. After four hours the errors kept rising the longer they left the tests running and they eventually left saying there was nothing more they could do.

A few days later my ISP (Idnet) informed me that "the problem" was fixed and that was the end of the matter as far as they were concerned. However ever since Christmas my IP Profile has bounced up and down, the interleaving level has increased and my TBB QM shows a lot of packet loss. Idnet say as long as the connection is "working" they aren't interested.

griff_90 - do you know anything about the line. Length? New/Old? Copper/Aluminium? Overhead/Underground?

Is there any noise/crackling on the phone that you could use as an excuse to get it checked?


The run down to my cabinet is approximately 300/400 metres underground. The apartments were built 7 years ago so the wiring is fairly new but I've no idea of the quality of wiring out in the street itself.

As for noise on the line that's a contentious issue. Like a lot of men my phone calls last 10 seconds at best so I've never really noticed any noise. HOWEVER in recent weeks I've been making more lengthy calls and there is very audible noise periodically during the call. BT will not investigate this though as unless the noise is present at the exact moment I call them to report it they say there's nothing they can do.
Standard User NuttyMucker
(member) Fri 09-Sep-11 12:14:47
Print Post

Re: How do my stats look?


[re: orly] [link to this post]
 
Folks,

I have got a bit lost with this. I would love to see my stats as I am 1.3 miles away from the cabinet and get between 13 - 16Mb download and anything between 0.7 and 1.1Mb upload speed. The problem is I am not sure what the simpliest way of obtaining these stats are. My ip profile bounces up and down as does my upload speed. My ISP have raised a fault regarding the upstream however when the fibre was installed I only had quoted speeds of 7.5 down and 0.5 up so I am doing much better anyway. I also experience dropouts in the middle of the night for no reason.
Could someone be very kind and explain in laymans terms what to so without damaging the modem as I only have one smile
I am using a Netgear wnr 2000 router
Thanks in advance

Standard User griff_90
(fountain of knowledge) Fri 09-Sep-11 12:18:41
Print Post

Re: How do my stats look?


[re: NuttyMucker] [link to this post]
 
asbokid has been kind enough to create this blog all about unlocking the modem - http://huaweihg612hacking.wordpress.com/about/

There's a pdf guide with detailed instructions which can be found in the "unlocked firmware" section on the right hand side of his site.

Take any warnings and precautions seriously though.

Edited by griff_90 (Fri 09-Sep-11 12:18:56)

Standard User NuttyMucker
(member) Fri 09-Sep-11 12:36:41
Print Post

Re: How do my stats look?


[re: griff_90] [link to this post]
 
Thankyou, I will give this a shot later today and post any stats that I recover.

I didnt see that pdf before which simplifies everything smile

Standard User orly
(fountain of knowledge) Fri 09-Sep-11 12:44:20
Print Post

Re: How do my stats look?


[re: NuttyMucker] [link to this post]
 
Make sure you check if you have an SP06 or SP10 modem too as there are 2 different types. The number on the back/bottom of the modem will tell you...the last 4 characters.

Then you just follow the PDF and install the unlocked firmware. It's a fairly easy set up. I found after installing the new firmware nothing popped up on the screen to tell me so it was a bit of a guess to make sure it had finished correctly. Just wait a few minutes and it should be fine.

---
> Comparison chart of FTTC ISPs
> Got FTTC? Complete the survey

BT Infinity 8th July 2010
(NIBA)
600m (approx) to cabinet
23.5mbit down / 8mbit up
Standard User NuttyMucker
(member) Fri 09-Sep-11 13:05:00
Print Post

Re: How do my stats look?


[re: orly] [link to this post]
 
Thanks Orly. I hope I dont fry the modem smile

Standard User orly
(fountain of knowledge) Fri 09-Sep-11 13:54:46
Print Post

Re: How do my stats look?


[re: NuttyMucker] [link to this post]
 
Pretty sure if you call up BT and say it's not working they'd replace it wink

---
> Comparison chart of FTTC ISPs
> Got FTTC? Complete the survey

BT Infinity 8th July 2010
(NIBA)
600m (approx) to cabinet
23.5mbit down / 8mbit up
Standard User WWWombat
(committed) Fri 09-Sep-11 15:28:39
Print Post

Re: How do my stats look?


[re: mr_bean] [link to this post]
 
I've been meaning to get around to playing with this... and SWMBO is away at the weekend, so I might get a chance!

Are the plotting scripts available anywhere? If so, I'll try doing my own plotting.

In the meantime, I wanted to point this out...

In reply to a post by mr_bean:
asbokid has graphed whatever it was I sent him and produced this:

http://img846.imageshack.us/img846/3836/statsop.jpg

Now i'm not sure what I'm looking at but does it appear a bit strange to anyone else? Seems the first image roughly correlates in shape to the 2nd one, except for the big "gash" in it.
I'm just trying to get my head around it.

...

BT are using VDSL profile 8c, annex B and according to this document band plan 997 truncated at 7.05MHz.

...

3) Line noise. In the higher tones this nicely mirrors the SNR as you'd expect. In the lower tone it doesn't - I suspect this is due to spectral power management.


I noticed the difference between the 2 graphs as being the location of the "gash" (although I'm not sure everyone has the same idea of which bit is being called the gash!): Orly's gash (or dip) appears to end around tone 250, in the SNR graph (ie top graph), while griff_90's gash appears to finish around tone 500 in the same graph (but second down in their image).

I suspect this is indeed caused by the spectral power mask applied at the cabinet - and that the 2 cabinets have different masks.

The document linked above: BT's VDSL Primer from 2009, shows the masks BT intended using at the time. See pages 31 and 32 (of 66).

The masks may put the top of the gash at 600kHz (for cabinets far from the exchange), up to around 2MHz for those closest the exchange.

So... I bet that Orly's cabinet is further from the exchange than griff_90's.

However... I'm not convinced that this document represents the actual deployment at Openreach today. Some of the screen-grabs here show that BT are using US0 (25kHz - 138kHz) which isn't shown in the band-plan 997 in that document, and the spectral mask makes no allowance for it either. I suspect there are some differences in reality...

On a separate note: this mask is a way in which the E-side distance can still affect the bandwidth you see as a customer; the overall behaviour of VDSL2 isn't *just* dependent on the D-side distance.
Standard User NuttyMucker
(member) Fri 09-Sep-11 15:58:45
Print Post

Re: How do my stats look?


[re: orly] [link to this post]
 
Hi Orly,
I have a SP10 modem and failed to connect using 192.168.1.100 after following all the steps.
When I reconnected the dsl light didnt come on and I thought the modem was fried frown
Eventually after rebooting the modem and my router all came back to life.
On BT speedtester my ip profile has increased by over 200Kb so all is not lostsmile

I have bottled it for the meantime as I have a long night on the xbox ahead of me and I dont want to be without my internet.

Thanks again, Nutty

Standard User griff_90
(fountain of knowledge) Fri 09-Sep-11 16:02:57
Print Post

Re: How do my stats look?


[re: NuttyMucker] [link to this post]
 
The modem IP is 192.168.1.1

The PDF guide tells you to set your NIC to 192.168.1.100
Standard User orly
(fountain of knowledge) Fri 09-Sep-11 16:35:31
Print Post

Re: How do my stats look?


[re: NuttyMucker] [link to this post]
 
On Windows 7 which I'm using you go to Network and Sharing Center > click Local Area Connection on the right > Properties > Internet Protocol V4 > Properties > Click "Use the following IP Address"

Make sure your network card is set to 192.168.1.100, subnet mask is the default 255.255.255.0 and the gateway is 192.168.1.1

Make sure the computer you're using is connected into LAN2

In your browser you'll want to go to http://192.168.1.1 (user: admin, pass: admin)

---
> Comparison chart of FTTC ISPs
> Got FTTC? Complete the survey

BT Infinity 8th July 2010
(NIBA)
600m (approx) to cabinet
23.5mbit down / 8mbit up

Edited by orly (Fri 09-Sep-11 16:36:19)

Standard User NuttyMucker
(member) Fri 09-Sep-11 16:52:00
Print Post

Re: How do my stats look?


[re: orly] [link to this post]
 
Aha, I never set the gateway which would have been helpful
Thanks for the post.
I wil do it tomorrow as stated long night on the xbox with a friend called smirnoff to keep me company smile
I will post my stats up tomorrow.
Thanks again

Standard User nelix01
(member) Fri 09-Sep-11 21:05:09
Print Post

Re: How do my stats look?


[re: orly] [link to this post]
 
Hi Orly,

I was able to flash the modem and get into the login page but after that things went downhill. I could get no response when trying to change the firewall and was unable to enter any other menu.

After unplugging and rebooting, I am not even able to get to the login page now.

I am using a SP06 modem.

Standard User mr_bean
(member) Fri 09-Sep-11 21:11:50
Print Post

Re: How do my stats look?


[re: nelix01] [link to this post]
 
After unplugging and rebooting, I am not even able to get to the login page now.
Did you, by any chance, set the firewall back to "BT"

If so that will lock you out of the web UI as it sets it back to the BT firewall rules which block access from either of the Lan ports

Power on holding the reset and, assuming that you get the firmware update page again, reflash it back with the unlocked firmware.
Standard User nelix01
(member) Fri 09-Sep-11 21:14:43
Print Post

Re: How do my stats look?


[re: mr_bean] [link to this post]
 
That is exactly what I did doh!!! Will try again.

Standard User orly
(fountain of knowledge) Sat 10-Sep-11 00:09:48
Print Post

Re: How do my stats look?


[re: nelix01] [link to this post]
 
only use "standard"

or "off" if you want to use a secure shell login.

---
> Comparison chart of FTTC ISPs
> Got FTTC? Complete the survey

BT Infinity 8th July 2010
(NIBA)
600m (approx) to cabinet
23.5mbit down / 8mbit up
Standard User Adsl24
(fountain of knowledge) Sat 10-Sep-11 09:25:38
Print Post

Re: How do my stats look?


[re: orly] [link to this post]
 
Do you know of any way to "edit/delete" the BT rule to avoid accidental selection once unlocked?

Thanks

James
ADSL24 Broadband
http://adsl24.co.uk
Standard User nelix01
(member) Sat 10-Sep-11 11:30:34
Print Post

Re: How do my stats look?


[re: orly] [link to this post]
 
Managed to re-flash the modem but cannot get into any menus.

Standard User orly
(fountain of knowledge) Sat 10-Sep-11 11:37:25
Print Post

Re: How do my stats look?


[re: nelix01] [link to this post]
 
Can you even get to the login page?

---
> Comparison chart of FTTC ISPs
> Got FTTC? Complete the survey

BT Infinity 8th July 2010
(NIBA)
600m (approx) to cabinet
23.5mbit down / 8mbit up
Standard User nelix01
(committed) Sat 10-Sep-11 11:49:17
Print Post

Re: How do my stats look?


[re: orly] [link to this post]
 
No, cant even get logged in. Have I missed sOmething like not disconnecting the hub3?

Standard User orly
(fountain of knowledge) Sat 10-Sep-11 11:52:41
Print Post

Re: How do my stats look?


[re: nelix01] [link to this post]
 
After installing the new firmware I could leave the hub connected to LAN1 on the modem but I just plugged my PC into LAN2 instead. As long as I changed my IP and default gateway on my PC it would allow me to get to the modem config @ http://192.168.1.1

---
> Comparison chart of FTTC ISPs
> Got FTTC? Complete the survey

BT Infinity 8th July 2010
(NIBA)
600m (approx) to cabinet
23.5mbit down / 8mbit up
Standard User Cottee55
(newbie) Sat 10-Sep-11 12:20:46
Print Post

Re: How do my stats look?


[re: orly] [link to this post]
 
I'm on bt option 3 with fibre and can't wait to see my stats, I've flashed the modem fine but when I log on to telnet and it finds the modem. I put the login name in but it keeps saying it's wrong, am I missing the point? I thought it was admin admin the same as loging into the modem to change the firewall settings.

Edited by Cottee55 (Sat 10-Sep-11 12:21:57)

Anonymous
(Unregistered)Sat 10-Sep-11 12:39:05
Print Post

Re: How do my stats look?


[re: nelix01] [link to this post]
 
In reply to a post by nelix01:
No, cant even get logged in. Have I missed sOmething like not disconnecting the hub3?


I did the same, I'm thinking asbokid might need to come to rescue tongue
Anonymous
(Unregistered)Sat 10-Sep-11 13:39:24
Print Post

Re: How do my stats look?


[re: Anonymous] [link to this post]
 
hes mine on bt option 3 with fibre. I was told I would only get 8meg as I'm 900 meters from the cab. so I was really happy with 26, its a shame my snr is it better so I could get the full 30 my lines capable of.


# /bin/xdslcmd info --pbParams
/bin/xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 2
Max: Upstream rate = 13183 Kbps, Downstream rate = 30872 Kbps
Path: 0, Upstream rate = 1997 Kbps, Downstream rate = 26566 Kbps

Discovery Phase (Initial) Band Plan
US: (0,95) (696,1183)
DS: (32,687) (1192,1627)
Medley Phase (Final) Band Plan
US: (0,95) (696,1183)
DS: (32,687) (1192,1627)
VDSL Port Details Upstream Downstream
Attainable Net Data Rate: 13183 kbps 30872 kbps
Actual Aggregate Tx Power: 2.1 dBm 10.1 dBm
============================================================================
VDSL Band Status U0 U1 U2 U3 D1 D2 D3
Line Attenuation(dB): 6.5 39.8 N/A N/A 17.2 51.9 N/A
Signal Attenuation(dB): 9.8 38.7 N/A N/A 17.2 51.9 N/A
SNR Margin(dB): 24.9 24.4 N/A N/A 6.3 6.3 N/A
TX Power(dBm): -9.6 1.8 N/A N/A 9.3 2.6 N/A
# /bin/xdslcmd info --pbParams
/bin/xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 2
Max: Upstream rate = 13171 Kbps, Downstream rate = 30784 Kbps
Path: 0, Upstream rate = 1997 Kbps, Downstream rate = 26566 Kbps

Discovery Phase (Initial) Band Plan
US: (0,95) (696,1183)
DS: (32,687) (1192,1627)
Medley Phase (Final) Band Plan
US: (0,95) (696,1183)
DS: (32,687) (1192,1627)
VDSL Port Details Upstream Downstream
Attainable Net Data Rate: 13171 kbps 30784 kbps
Actual Aggregate Tx Power: 2.1 dBm 10.1 dBm
============================================================================
VDSL Band Status U0 U1 U2 U3 D1 D2 D3
Line Attenuation(dB): 6.5 39.8 N/A N/A 17.2 51.9 N/A
Signal Attenuation(dB): 9.8 38.7 N/A N/A 17.2 51.9 N/A
SNR Margin(dB): 25.1 24.4 N/A N/A 6.2 6.2 N/A
TX Power(dBm): -9.6 1.8 N/A N/A 9.3 2.6 N/A
Standard User asbokid
(learned) Sat 10-Sep-11 13:50:08
Print Post

Re: How do my stats look?


[re: Cottee55] [link to this post]
 
hi cottee..

'm no good with windows, if something needs configuring there.

do you have web access to the modem? how are connecting your pc to the modem?

Is your modem the sp06 version? or the sp10? and which firmware did you flash?

if you get stuck, flashing sp10 firmware into an original sp06 modem 'seems' to work without a problem..

if you are using sp06 then by default you only have shell access using ssh.

try the putty client for ssh. it is both a telnet and ssh client for windows..

http://www.puttyssh.org/

if you set putty to log its session output to file and email me or post that file here, i can take a look..

cheers
Standard User burakkucat
(member) Sat 10-Sep-11 13:59:38
Print Post

Re: How do my stats look?


[re: Adsl24] [link to this post]
 
In reply to a post by Adsl24:
Do you know of any way to "edit/delete" the BT rule to avoid accidental selection once unlocked?
Yes James, that can be done.

Advanced --> Firewall --> Firewall Level: BT

Now choose Delete level and click on Select. smile

-----------------------------------------------------

100% Linux and, previously, Unix.

Edited by burakkucat (Sat 10-Sep-11 14:01:30)

Standard User Cottee55
(newbie) Sat 10-Sep-11 14:03:25
Print Post

Re: How do my stats look?


[re: burakkucat] [link to this post]
 
I got there in the end thanks for replying my stats are above but I posted without logging in by mistake, so alls good in the end shame I can't get the full 30 meg that my lines capable of but 26 is better than the 1.5 I've had for years. My lines capable of 13 up but bt won't budge on removing the 2 meg up speed.

Edited by Cottee55 (Sat 10-Sep-11 14:06:19)

Standard User lockyatlrg
(fountain of knowledge) Sat 10-Sep-11 14:26:03
Print Post

Re: How do my stats look?


[re: asbokid] [link to this post]
 
Can anyone give me an idea of my attenuation? is there a formula of working it out from both paths? and my rough line distance from the cab?

stats here, I don't really understand the 2 different US and DS stats, my line is 350 meters to the cab by road so the true length may be closer to 400ish.

etrain Reason: 0
Max: Upstream rate = 17307 Kbps, Downstream rate = 48560 Kbps
Path: 0, Upstream rate = 9995 Kbps, Downstream rate = 39999 Kbps

Discovery Phase (Initial) Band Plan
US: (0,95) (696,1183)
DS: (32,687) (1192,1627)
Medley Phase (Final) Band Plan
US: (0,95) (696,1183)
DS: (32,687) (1192,1627)
VDSL Port Details Upstream Downstream
Attainable Net Data Rate: 17307 kbps 48560 kbps
Actual Aggregate Tx Power: - 17.7 dBm 7.7 dBm
================================================== ==========================
VDSL Band Status U0 U1 U2 U3 D1 D2 D3
Line Attenuation(dB): 3.4 13.4 N/A N/A 7.8 16.6 N/A

Signal Attenuation(dB): 0.0 13.5 N/A N/A 7.8 16.6 N/A

SNR Margin(dB): 16.7 16.7 N/A N/A 8.5 8.5 N/A

TX Power(dBm): -28.3 -18.0 N/A N/A 6.1 2.6 N/A

Statistics
Help

Path 0

Path 1
Downstream Upstream Downstream Upstream
Line rate (kbit/s) 39999 9995 0 0
CRC errors 0 0 0 0
FEC errors 15 0 0 0
HEC errors 21 0 0 0

BT Infinity
ROUTER:-Netgear WNDR37AV
Sync 40000D 10000U
Standard User NuttyMucker
(member) Sat 10-Sep-11 15:35:45
Print Post

Re: How do my stats look?


[re: orly] [link to this post]
 
Hi Orly,
Tried again today and can get to the user interface for flashing the modem but the page times out and the modem does not reboot. Once this happens I have to start over again as 192.168.1.1 will not bring me back to the modem page. I am using the correct flash.

Any ideas

Standard User griff_90
(fountain of knowledge) Sat 10-Sep-11 15:38:49
Print Post

Re: How do my stats look?


[re: NuttyMucker] [link to this post]
 
Have you set your NIC to the correct IP?
Standard User nelix01
(committed) Sat 10-Sep-11 17:40:01
Print Post

Re: How do my stats look?


[re: griff_90] [link to this post]
 
Having the same problem as NuttyMucker. I can flash the modem but after that no access. I believe I have the NIC set up correctly as to flash it in the first place?

I have tried with both SP06 and SP10.

Standard User NuttyMucker
(member) Sat 10-Sep-11 17:50:54
Print Post

Re: How do my stats look?


[re: griff_90] [link to this post]
 
Yep everything is set correctly. The first time I tried it I got onto the interface but all the fields were blank. I wasnt sure wether the flash had installed but went ahead to change the firewall setting to telnet the modem but it just hung. After that nothing and I tried 3 or 4 times reflashing but to no avail frown

Standard User griff_90
(fountain of knowledge) Sat 10-Sep-11 17:51:27
Print Post

Re: How do my stats look?


[re: nelix01] [link to this post]
 
Are you definitely flashing it with the unlocked firmware? It can be easy to download the original firmware by mistake and flash it with that.
Standard User griff_90
(fountain of knowledge) Sat 10-Sep-11 17:54:10
Print Post

Re: How do my stats look?


[re: NuttyMucker] [link to this post]
 
Tried flashing it again?
Standard User orly
(fountain of knowledge) Sat 10-Sep-11 17:56:10
Print Post

Re: How do my stats look?


[re: NuttyMucker] [link to this post]
 
I changed some settings which did that to me. Can't remember but buried in one of the pages there is one setting for internet bridging or the like. It's set to LAN1 but I set it to LAN2 and it all went pear shared. The page seemed to load but it was just empty boxes all over. If I clicked, stuff would time out and error messages from the browser would appear.

Had to reset the modem to get back in.

I think if you can get far enough to turn the firewall off, things seem to run nicer while you're on the settings. Just have to turn it back on again to standard before logging out just to be safe

---
> Comparison chart of FTTC ISPs
> Got FTTC? Complete the survey

BT Infinity 8th July 2010
(NIBA)
600m (approx) to cabinet
23.5mbit down / 8mbit up
Standard User mr_bean
(member) Sat 10-Sep-11 18:33:29
Print Post

Re: How do my stats look?


[re: NuttyMucker] [link to this post]
 
Does it still work as a modem - i.e does it sync, connect to t' internet and so-on

If so you obviously haven't bricked it.

I wonder... asbokid, would it remember the "BT" firewall setting across a reflash?
Standard User nelix01
(committed) Sat 10-Sep-11 18:33:54
Print Post

Re: How do my stats look?


[re: orly] [link to this post]
 
I have just put the original SP06 software back on again as getting nowhere. I think it may be down to some setting in windows vista but getting pressure from SWMBO to let her back on the PC!!

Standard User NuttyMucker
(member) Sat 10-Sep-11 18:37:22
Print Post

Re: How do my stats look?


[re: mr_bean] [link to this post]
 
Hi, No I am able to reconfigure it all back up and change my NIC settings so back online. I am just reluctant of overdoing it and my ip profile starts to drop because of all the disconnections.

On top of that my car has started misfiring and think its the HT leads so have to start messing with that before I do anything else.

Standard User asbokid
(learned) Sat 10-Sep-11 21:05:06
Print Post

Re: How do my stats look?


[re: griff_90] [link to this post]
 
Hi.

The SP06 firmware for the HG612 does seem a bit quirky.

You can give it a helping hand with a 'Long Reset'.

This works on both the SP06 and the SP10 firmware versions for the Huawei HG612:

  • Flash in the unlocked firmware, as per the instructions.
  • Give the modem time to reboot.
  • Check with your PC that the xDSL line has synced, and that you have internet connectivity
  • Hold in the Reset Button on the front of the HG612 for 10+ seconds, and then release it.
  • This causes a 'Long Reset'.
  • The modem will replace the old Default Configuration file with the new (unlocked) version.
  • Give the modem time to reboot again after the 'Long Reset'
  • Visit http://192.168.1.1 (the address of Huawei's web interface).
  • You can now access all the configuration options for the modem.

Edited by asbokid (Sun 11-Sep-11 00:46:12)

Standard User asbokid
(learned) Sat 10-Sep-11 21:22:08
Print Post

Re: How do my stats look?


[re: lockyatlrg] [link to this post]
 
In reply to a post by lockyatlrg:
Can anyone give me an idea of my attenuation? is there a formula of working it out from both paths?

That's a good question, lockyatlrg! But maybe there isn't any one correct answer..

There are a few candidate formulas, some better than others..

A simple average could be calculated. It would be based on the sum of the attenuation calculations for the utilised frequency bands, and calculated separately for each direction. It wouldn't be very meaningful combining the attenuation figures for upstream and the downstream bands.

Alternatively, the attenuation could be apportioned according to the number of carriers in a given band and the bit loading for each carrier in that band. This metric would capture the impact of the attenuation on the quality of the connection.

The fact that the HG612 modem doesn't present an attenuation figure in its web interface could mean that Huawei hasn't got the answer either!

Text
1
23
4
VDSL Band Status          U0   U1  U2  U3  D1   D2  D3
------------------------------------------------------Line Attenuation(dB):    3.4 13.4 N/A N/A 7.8 16.6 N/A
Signal Attenuation(dB):  0.0 13.5 N/A N/A 7.8 16.6 N/A


EDIT: So we could combine the (downstream) Signal Attenuation (S/A) figures of D1 and D2, and divide the sum by 2.. And that gives us a single figure for Downstream S/A of 12.2dB

But if we sum the count of subcarriers per band, and using that count in the apportionment of the attenuation, we will obtain a different figure..

Text
1
23
45
6
(Final) Band Plan
-------------------------      U0         U1
US: (0,95)   (696,1183)      D1         D2
DS: (32,687) (1192,1627)


We see that frequency band D1 utilises 655 tones (or subcarriers) while 435 tones are utilised in band D2.

So the total count of subcarriers is 1090. And of those carriers some 60% are attenuated by 7.8dB (on average), while 40% of the subcarriers, those in the higher frequency band D2, are attenuated by 16.6dB.

Some very crude arithmetic gives us an average Signal Attenuation across both Downstream bands (D1 and D2) of (0.6*7.8) + (0.4*16.6) = 11.32dB

Not that different to the first calculation. Anyone still awake?

To make it more accurate, the bit depth for each carrier (the number of bits encoded in the subcarrier's QAM constellation) could be incorporated into the attenuation figure..

I won't try and work that out..

cheers

Edited by asbokid (Sat 10-Sep-11 21:45:05)

Standard User lockyatlrg
(fountain of knowledge) Sat 10-Sep-11 21:25:18
Print Post

Re: How do my stats look?


[re: asbokid] [link to this post]
 
By the way disabling the QOS on the BT modem has got me another 1mbs throughput on speed tests.

BT Infinity
ROUTER:-Netgear WNDR37AV
Sync 40000D 10000U
Standard User LeJimster
(fountain of knowledge) Sat 10-Sep-11 22:41:03
Print Post

Re: How do my stats look?


[re: lockyatlrg] [link to this post]
 
Good tip. I'd probably disable that if I had FTTC too since I have a custom router designed to do things like QoS, might as well free up the CPU power on the modem.

________________________
Connected with O2 Broadband Standard 8.6Mb/1.2Mb
Standard User RobertoS
(sensei) Sat 10-Sep-11 23:46:34
Print Post

Re: How do my stats look?


[re: asbokid] [link to this post]
 
In reply to a post by asbokid:
There are a few candidate formulas, some better than others..

A simple average could be calculated. It would be based on the sum of the attenuation calculations for the utilised frequency bands, and calculated separately for each direction. It wouldn't be very meaningful combining the attenuation figures for upstream and the downstream bands.

Alternatively, the attenuation could be apportioned according to the number of carriers in a given band and the bit loading for each carrier in that band. This metric would capture the impact of the attenuation on the quality of the connection.

The fact that the HG612 modem doesn't present an attenuation figure in its web interface could mean that Huawei hasn't got the answer either!
If I manage to screw up the courage to see about getting into mine, I know the attenuation reported by the JDSU.

My broadband basic info/help site - www.robertos.me.uk
My domains,website and mail hosting - Tsohost. Internet connection - IDNet Home Starter Fibre. Live BQM.

"Where talent is a dwarf, self-esteem is a giant." - Jean-Antoine Petit-Senn.
Standard User griff_90
(fountain of knowledge) Sun 11-Sep-11 00:03:59
Print Post

Re: How do my stats look?


[re: lockyatlrg] [link to this post]
 
In reply to a post by lockyatlrg:
By the way disabling the QOS on the BT modem has got me another 1mbs throughput on speed tests.


I'm a bit confused by this (easily done tbf).

Although by default QOS is enabled there's no actual policies in place is there?
Standard User adebov
(eat-sleep-adslguide) Sun 11-Sep-11 00:21:56
Print Post

Re: How do my stats look?


[re: RobertoS] [link to this post]
 
In reply to a post by RobertoS:
If I manage to screw up the courage to see about getting into mine

Can I suggest re-arranging that to read 'If I manage to get the courage to see about screwing up mine' wink

Ade

vDSL2 FTTC Infinity with BT
DL Sync 40Mbps
UL Sync 10Mbps
Standard User lockyatlrg
(fountain of knowledge) Sun 11-Sep-11 06:36:29
Print Post

Re: How do my stats look?


[re: RobertoS] [link to this post]
 
I have done two modems RobertoS, It's a piece of cake.

Before doing this set the IP in the nick to 192.168.1.6 to be honest you can use 192.169.1.2 all the to way to 254.

Subnet to 255.255.255.0

Default gateway to 192.168.1.1

When flashing leave the upload to do it's thing don't be put off if the upload page times out it's normal and the modem will reboot it's self, then it's done and login.

I think you will be fine to be honest.

BT Infinity
ROUTER:-Netgear WNDR37AV
Sync 40000D 10000U
Standard User lockyatlrg
(fountain of knowledge) Sun 11-Sep-11 06:37:40
Print Post

Re: How do my stats look?


[re: LeJimster] [link to this post]
 
Disabling the QOS gave me another 0.5mbs on the download and a whole 1mbs on the upload so it's deffo worth doing.

I have done the same thing on my mates modem and got the same results.

BT Infinity
ROUTER:-Netgear WNDR37AV
Sync 40000D 10000U
Standard User nelix01
(committed) Sun 11-Sep-11 13:14:14
Print Post

Re: How do my stats look?


[re: asbokid] [link to this post]
 
Cheers asbokid, that seems to have done the trick for me and I can now access the modem and all the menus. Managed to pull the following stats:




Attainable rate (kbit/s) 47232 15962
SNR margin (dB) 11.1 22
Line attenuation (dB) 0 0
Output power (dBmV) 10.4 -23.1


Line rate (kbit/s) 39999 9995
CRC errors 0 0
FEC errors 0 0
HEC errors 0 0

I have also gained an additional 1Mbps of upload speed by disabling QoS on the modem.

Edited by nelix01 (Sun 11-Sep-11 13:27:01)

Standard User NuttyMucker
(member) Sun 11-Sep-11 14:24:55
Print Post

Re: How do my stats look?


[re: asbokid] [link to this post]
 
Modem Stats

Finally got in smile Trial and error and a few reboots later.

Thanks again to all the posters for their help.

My line is not great however 1.3 miles from the cab I cant complain. Unfortunately my IP profile has dropped because of the reboots so hopefully it will pick up soon.

The QOS has been switched off so that should help my speeds smile

Thanks again

Nutty

Standard User lockyatlrg
(fountain of knowledge) Sun 11-Sep-11 14:45:39
Print Post

Re: How do my stats look?


[re: nelix01] [link to this post]
 
What was your guess speed on BT and what is your distance to the cab?

Can you post stats from Telnet also please.

BT Infinity
ROUTER:-Netgear WNDR37AV
Sync 40000D 10000U

Edited by lockyatlrg (Sun 11-Sep-11 14:53:07)

Standard User nelix01
(committed) Sun 11-Sep-11 14:55:10
Print Post

Re: How do my stats look?


[re: lockyatlrg] [link to this post]
 
My guess was that I was connected at 40/10 as I am 113 meters from the CAB. My actual throughput is around 37/8.

Standard User lockyatlrg
(fountain of knowledge) Sun 11-Sep-11 15:05:32
Print Post

Re: How do my stats look?


[re: nelix01] [link to this post]
 
What I mean is what was the speed BT wholesale checker gave when you was ordering FTTC.?

Mine was 32/7.5, I am 350 meters from the cab by road and probably line length, cab is about 100 meters straight line distance.

Also any Telnet stats

telnet 192.168.1.1
login:admin
Password:admin

type sh

type or paste xdslcmd info --pbParams

BT Infinity
ROUTER:-Netgear WNDR37AV
Sync 40000D 10000U
Standard User nelix01
(committed) Sun 11-Sep-11 15:39:51
Print Post

Re: How do my stats look?


[re: lockyatlrg] [link to this post]
 
My estimate was 35/8. Tried Telnet, wasn't sure what I was looking at tbh.
Will look into it a bit closer this evening.

I was able to pull some additional info from SSH:

# xdslcmd info --pbParams
xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Max: Upstream rate = 15760 Kbps, Downstream rate = 47232 Kbps
Path: 0, Upstream rate = 9995 Kbps, Downstream rate = 39999 Kbps

Discovery Phase (Initial) Band Plan
US: (0,95) (696,1183)
DS: (32,687) (1192,1627)
Medley Phase (Final) Band Plan
US: (0,95) (696,1183)
DS: (32,687) (1192,1627)
VDSL Port Details Upstream Downstream
Attainable Net Data Rate: 15760 kbps 47232 kbps
Actual Aggregate Tx Power: - 23.1 dBm 10.4 dBm
============================================================================
VDSL Band Status U0 U1 U2 U3 D1 D2 D3
Line Attenuation(dB): 2.7 8.9 N/A N/A 5.0 10.8 N/A
Signal Attenuation(dB): 0.0 7.9 N/A N/A 5.0 10.8 N/A
SNR Margin(dB): 22.0 21.7 N/A N/A 11.1 10.9 N/A
TX Power(dBm): -33.4 -23.5 N/A N/A 9.5 2.9 N/A


Edited by nelix01 (Sun 11-Sep-11 18:01:18)

Standard User NuttyMucker
(member) Sun 11-Sep-11 19:49:48
Print Post

Re: How do my stats look?


[re: asbokid] [link to this post]
 
Used telnet and got these results. The second command for the graph timed me out.

Telnet

This is my interface after modem has not been rebooted in a few hours

Interface

The adsl checker stated 7.5Mb down and 0.5Mb up prior to getting the fibre installed with ADSL24 so I am very happy with my current speeds if only my upload could rise a wee bit more smile

As I said earlier I have disabled the QOS and my upload has risen about 200Kb so thats good. Unfortunately as I was having problems earlier getting into the intrface my ip profile has dropped slightly but hopefully in the next few days it should rise again.

If anyone would like to pass comment on the stats it would be appreciated.

Nutty

Standard User Adsl24
(fountain of knowledge) Sun 11-Sep-11 20:11:54
Print Post

Re: How do my stats look?


[re: NuttyMucker] [link to this post]
 
I've just noticed your problem.

Your upstream SYNC is actually only 1232 kbps, hence why you are only seeing about 1Mb on throughput! It appears the BT IP profile at 2000k is actually just wrong, or set at the lowest it goes.

Knowing that, it actually appears your connection is running close to the max when you achieve 900-1000k upload.

James
ADSL24 Broadband
http://adsl24.co.uk

Edited by Adsl24 (Sun 11-Sep-11 20:13:58)

Standard User asbokid
(learned) Sun 11-Sep-11 20:47:38
Print Post

Re: How do my stats look?


[re: NuttyMucker] [link to this post]
 
Nice one NuttyMucker!

It would be interesting to plot some graphs using your connection data.

We can see that your connection has fallen back to using the U0 upstream frequency band. This band is normally reserved for long-distance use only. You also have just one Downstream band in use.. (D1) Is your home some distance from the cabinet?

If you would like those graphs, would you download the Putty telnet/ssh client [1] and configure it so that it logs the session to file..

Then log in to the Huawei using Putty and issue the following three* commands.
xdslcmd info --pbParams
xdslcmd info --linediag
xdslcmd info --Bits

If you email me the session log file from Putty, I will plot a set of graphs for you..

Cheers.

[1] http://puttyssh.org/

*EDIT: Thanks Pauline!

Edited by asbokid (Sun 11-Sep-11 22:23:11)

Standard User NuttyMucker
(member) Sun 11-Sep-11 21:12:35
Print Post

Re: How do my stats look?


[re: asbokid] [link to this post]
 
Thanks asbokid,

I will try and do that later tonight failing that tommorow. Yep it is a long line 1.3miles by road between house and cabinet frown My line is also connected through a sub cabinet about 150m from me. I am trying to rally the residents up here to try and lobby BT to install a fibre cab in the village but going no-where fast. Only part of the village here can get this and I had to fight with BT telling them that the stats they held were wrong and for once they listened and updated the adsl checker which meant I could order ( Original stats of 500Kb down and 100Kb up were wrong due to incomplete data on their database and guessing too long a line)
I have also been down the council route but here in NI the UKBD funding is held by DETI NI so they will dish the funds out but when contacting them all I get is no plans. At least though I have better than a lot of other people smile

When I ran the command --linediag it timed out but obviously I hadn't downloaded the putty client.

Cheers Nutty

Anonymous
(Unregistered)Sun 11-Sep-11 22:03:49
Print Post

Re: How do my stats look?


[re: NuttyMucker] [link to this post]
 
In reply to a post by NuttyMucker:
When I ran the command --linediag it timed out but obviously I hadn't downloaded the putty client.

Cheers Nutty


Hi Nutty,

I believe that asbokid might also find the log file for 'xdslcmd info --Bits' very useful & could include that graph too.

Pauline.
Standard User NuttyMucker
(member) Sun 11-Sep-11 22:12:11
Print Post

Re: How do my stats look?


[re: Anonymous] [link to this post]
 
Yep no probs. The laptop that I use to get the stats is being used at the mo so I will get these tomorrow and also hopefully my ip profile will have gone back up smile

Standard User MrGimper
(newbie) Mon 12-Sep-11 18:22:32
Print Post

Re: How do my stats look?


[re: nelix01] [link to this post]
 
Now it's possible to get into the modem, does this mean we can tweak the SNR margins like we could on ADSL?

G

BT Infinity for Business
5x Static IP and unlimited traffic
Down = 33.59 Mb/s
Up = 8.32 Mb/s
Ping = 12 ms

BOOM!!
Standard User nelix01
(committed) Mon 12-Sep-11 19:09:06
Print Post

Re: How do my stats look?


[re: MrGimper] [link to this post]
 
Good question and one I was thinking myself. Just dont know how to do itsmile

Standard User Adsl24
(fountain of knowledge) Mon 12-Sep-11 20:10:52
Print Post

Re: How do my stats look?


[re: nelix01] [link to this post]
 
You could try the usual broadcom SNR trick, with the new xdslcmd tool:

*USE WITH CAUTION*

xdslcmd configure --snr XX

XX being the percent of SNR to reduce by. E.g. XX = 50 means reduce the current target SNR by 50%. So if it was 6dB it would go to 3dB.

I confirm this works on my ADSL2+ line on the unlocked modem, can't test on a VDSL2 line yet.

Let me know.

James
ADSL24 Broadband
http://adsl24.co.uk
Standard User adebov
(eat-sleep-adslguide) Mon 12-Sep-11 20:14:01
Print Post

Re: How do my stats look?


[re: MrGimper] [link to this post]
 
In reply to a post by MrGimper:
Now it's possible to get into the modem, does this mean we can tweak the SNR margins like we could on ADSL?

And we wonder why BT have arranged for the Huawei to be disabled by default wink

Ade

vDSL2 FTTC Infinity with BT
DL Sync 40Mbps
UL Sync 10Mbps
Standard User lockyatlrg
(fountain of knowledge) Mon 12-Sep-11 21:43:17
Print Post

Re: How do my stats look?


[re: Adsl24] [link to this post]
 
if it does work It will only work for people who are not already on 40mb sync.

BT Infinity
ROUTER:-Netgear WNDR37AV
Sync 40000D 10000U
Standard User willuk2010
(newbie) Mon 12-Sep-11 21:53:02
Print Post

Re: How do my stats look?


[re: lockyatlrg] [link to this post]
 
guys, sorry to hijack this thread slightly,

But, i have been running a Vigor 2750n for quite some time (Got it working back in March http://forums.thinkbroadband.com/fibre/t/3976302-re-... )

Anyway, i have been having some issues with disconnects since Infinity was installed in March, and last week my whole connection and telephone line went dead!

Raised this with BT, and they came and fixed it yesterday, said there were multiple issues with the line outside the house etc.

So, i checked my stats, and saw i was only connected at 13mb (had about 34mb before) or something like that, and thought i would leave it for a day to see if it needed to work its self out. But today its at 11mb now, so its going down!

Can someone look over my stats, and see what they think... i recon an Upstream SNR 300 and a Downstream SNR of 200db ish is surly a problem??

VDSL
Link Status Showtime
Firmware Version 1411f0
VDSL2 Profile 8c
Basic Status Upstream Downstream Unit
Actual Data Rate 798 11394 Kb/s
SNR 310 218 0.1dB
Advance Status Upstream Downstream Unit
Actual delay 8 16 ms
Actual INP 43 80 0.1 symbols
15M CV 0 0 counter
1Day CV 31 0 counter
15M FEC 0 208 counter
1Day FEC 9591 208 counter
Total FEC 9591 208 counter
Previous Data Rate 0 0 Kbps
Attainable Rate 16296 25929 Kbps
Electrical Length 83 83 0.1 dB
SNR Margin N/A N/A (US0,--) 0.1 dB
SNR Margin 310 218 (US1,DS1) 0.1 dB
SNR Margin N/A 218 (US2,DS2) 0.1 dB
SNR Margin N/A N/A (US3,DS3) 0.1 dB
SNR Margin N/A N/A (US4,DS4) 0.1 dB
15M Elapsed time 810 810 secs
15M FECS 0 1 counter
15M ES 0 0 counter
15M SES 0 0 counter
15M LOSS 0 0 counter
15M UAS 0 0 counter
1Day Elapsed time 72810 72810 secs
1Day FECS 169 1 counter
1Day ES 13 0 counter
1Day SES 0 0 counter
1Day LOSS 0 0 counter
1Day UAS 466019 28 counter
Total FECS 169 1 counter
Total ES 13 0 counter
Total SES 0 0 counter
Total LOSS 0 0 counter
Total UAS 466019 28 counter

Does this still require BT to Fix do you think?

Edited by willuk2010 (Mon 12-Sep-11 22:01:05)

Standard User bobbyboyuk
(member) Tue 13-Sep-11 10:26:56
Print Post

Re: How do my stats look?


[re: willuk2010] [link to this post]
 
Look at these then, bet your all jealous! :rolleyes:

Aluminium line for you thats 1060m long.

[IMG]http://img14.imageshack.us/img14/2217/fibreeeeeeeeee...[/IMG]
Standard User Cottee55
(newbie) Tue 13-Sep-11 12:53:42
Print Post

Re: How do my stats look?


[re: Adsl24] [link to this post]
 
In reply to a post by Adsl24:
You could try the usual broadcom SNR trick, with the new xdslcmd tool:

*USE WITH CAUTION*

xdslcmd configure --snr XX

XX being the percent of SNR to reduce by. E.g. XX = 50 means reduce the current target SNR by 50%. So if it was 6dB it would go to 3dB.

I confirm this works on my ADSL2+ line on the unlocked modem, can't test on a VDSL2 line yet.


Let me know.


I tried this today after the line synced my snr was showing 257.4 for a few seconds then went to 6, so Im not sure if it worked. But my line rate went up to 28686 from 27134 but my ip profile is stuck at 26.249. Can the ip profile go up on it's own over time?

Edited by Cottee55 (Tue 13-Sep-11 12:56:01)

Standard User Adsl24
(fountain of knowledge) Tue 13-Sep-11 12:57:41
Print Post

Re: How do my stats look?


[re: Cottee55] [link to this post]
 
Yes the IP profile is directly linked with the SYNC speed so it will go up shortly. Its much faster at updating itself (on FTTC using Openreach's DLM) as opposed to BT Wholesales DLM.

James
ADSL24 Broadband
http://adsl24.co.uk
Standard User nelix01
(committed) Tue 13-Sep-11 18:37:01
Print Post

Re: How do my stats look?


[re: nelix01] [link to this post]
 
Have left the modem alone for a few days since flashing the new firmware. Here is a screenshot of the stats:

http://i11.photobucket.com/albums/a156/Nelix/ORModem...

Edited by nelix01 (Tue 13-Sep-11 18:41:12)

Standard User lockyatlrg
(fountain of knowledge) Tue 13-Sep-11 18:53:23
Print Post

Re: How do my stats look?


[re: nelix01] [link to this post]
 
your upload speed is same as mine 9995, seen others with 9999.. strange?

Good stats, mine has been in sync for 3 days now with no crc errors at all like yours.

BT Infinity
ROUTER:-Netgear WNDR37AV
Sync 40000D 10000U
Standard User willuk2010
(learned) Tue 13-Sep-11 20:04:09
Print Post

Re: How do my stats look?


[re: lockyatlrg] [link to this post]
 
Theres something very odd with my stats, its going down, 9995mb download now, altho it looks like my attainable rate is 25mb.

Vigor Stats

Links a bit easier to read than the pasting of text!

Any ideas anyone?
Standard User Adsl24
(fountain of knowledge) Tue 13-Sep-11 21:00:16
Print Post

Re: How do my stats look?


[re: willuk2010] [link to this post]
 
If you look again the reported SNR is displayed as a unit of 0.1dB, therefore it's not 310dB / 218dB but 31 and 21.8 respectively. Still too high though, looks like you are on a capped SYNC speed profile at the DSLAM.

James
ADSL24 Broadband
http://adsl24.co.uk
Standard User willuk2010
(learned) Wed 14-Sep-11 10:02:44
Print Post

Re: How do my stats look?


[re: Adsl24] [link to this post]
 
Ah ok, that makes more sense on the SNR.

What would cause the capped SYNC speed profile at the DSLAM? the high SNR?

How does one resolve this? i mean, what would you say to BT? if they know i know my SNR, and attainable speeds etc, wont they figure i have changed my Router?
Standard User Adsl24
(fountain of knowledge) Wed 14-Sep-11 20:55:02
Print Post

Re: How do my stats look?


[re: willuk2010] [link to this post]
 
The SNR is high because the SYNC speed is capped at the DLSAM. It would have happened automatically as a result of errors on the line, or a succession of disconnections. Your ISP can request this be re-trained or the cap removed, but ensure you don't have any underlying issue still as the same thing will just re-occur.

James

James
ADSL24 Broadband
http://adsl24.co.uk
Standard User bobbyboyuk
(member) Thu 15-Sep-11 14:55:11
Print Post

Re: How do my stats look?


[re: Adsl24] [link to this post]
 
tried the snr trick, didnt work, i have a poor line from the cab frown

http://img708.imageshack.us/img708/4258/rasstats.jpg
Standard User adebov
(eat-sleep-adslguide) Fri 16-Sep-11 12:35:59
Print Post

Re: How do my stats look?


[re: nelix01] [link to this post]
 
In reply to a post by nelix01:
VDSL Port Details Upstream Downstream
Attainable Net Data Rate: 15760 kbps 47232 kbps
Actual Aggregate Tx Power: - 23.1 dBm 10.4 dBm
============================================================================
VDSL Band Status U0 U1 U2 U3 D1 D2 D3
Line Attenuation(dB): 2.7 8.9 N/A N/A 5.0 10.8 N/A
Signal Attenuation(dB): 0.0 7.9 N/A N/A 5.0 10.8 N/A
SNR Margin(dB): 22.0 21.7 N/A N/A 11.1 10.9 N/A
TX Power(dBm): -33.4 -23.5 N/A N/A 9.5 2.9 N/A


Almost exactly the same figures as my line (estimate was 32.7Mbps/7.5Mbps - ish)
VDSL Port Details Upstream Downstream
Attainable Net Data Rate: 17531 kbps 47156 kbps
Actual Aggregate Tx Power: - 16.2 dBm 10.3 dBm
============================================================================
VDSL Band Status U0 U1 U2 U3 D1 D2 D3
Line Attenuation(dB): 3.6 16.0 N/A N/A 8.8 19.8 N/A

Signal Attenuation(dB): 0.0 15.0 N/A N/A 8.8 19.8 N/A

SNR Margin(dB): 22.0 21.9 N/A N/A 11.0 10.9 N/A

TX Power(dBm): -28.6 -16.5 N/A N/A 9.5 2.6 N/A


Oddly, though, your attenuation seems to be just over half mine, yet the attainable rates are the same and both our lines are operating with almost exactly the same SNR Margin for a 39999kbps sync (indicating they've both got similar capacity for the same extra speed, despite my line attenuation being much higher).

Ade

vDSL2 FTTC Infinity with BT
DL Sync 40Mbps
UL Sync 10Mbps
Standard User lockyatlrg
(fountain of knowledge) Fri 16-Sep-11 14:45:13
Print Post

Re: How do my stats look?


[re: nelix01] [link to this post]
 
you have a excellent line there, but I see you are 100ish meters from the cab.

mine is between 350 and 400 meters.

BT Infinity
ROUTER:-Netgear WNDR37AV
Sync 40000D 10000U
Standard User nelix01
(committed) Fri 16-Sep-11 15:15:06
Print Post

Re: How do my stats look?


[re: lockyatlrg] [link to this post]
 
Aye, the FTTC CAB is just at the entrance to the housing development. Much better than being over 8km by road from the exchange on ADSL and just about getting 1Mbps!!!!

Edited by nelix01 (Fri 16-Sep-11 15:18:10)

Standard User jmgraham
(newbie) Fri 16-Sep-11 20:48:17
Print Post

Re: How do my stats look?


[re: nelix01] [link to this post]
 
Here are my stats, i'm not sure of line length suspect around 300m, saw max attainable was over 53000 kbps this afternoon.



# xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Max: Upstream rate = 19114 Kbps, Downstream rate = 52212 Kbps
Path: 0, Upstream rate = 9995 Kbps, Downstream rate = 39999 Kbps

Discovery Phase (Initial) Band Plan
US: (0,95) (696,1183)
DS: (32,687) (1192,1627)
Medley Phase (Final) Band Plan
US: (0,95) (696,1183)
DS: (32,687) (1192,1627)
VDSL Port Details Upstream Downstream
Attainable Net Data Rate: 19114 kbps 52212 kbps
Actual Aggregate Tx Power: - 5.4 dBm 10.2 dBm
============================================================================
VDSL Band Status U0 U1 U2 U3 D1 D2 D3
Line Attenuation(dB): 5.9 26.7 N/A N/A 13.5 33.4 N/A
Signal Attenuation(dB): 7.9 25.9 N/A N/A 13.5 33.4 N/A
SNR Margin(dB): 22.0 21.9 N/A N/A 16.4 16.1 N/A
TX Power(dBm): -18.4 -5.7 N/A N/A 9.4 2.7 N/A

a bit better than the 2meg i was struggling to get with Sky LLU before smile
Standard User jmgraham
(newbie) Sat 17-Sep-11 11:18:17
Print Post

Re: How do my stats look?


[re: jmgraham] [link to this post]
 
here is link to my stats this morning

http://img600.imageshack.us/img600/9504/btvdsl.jpg

Edited by jmgraham (Sat 17-Sep-11 11:23:07)

Standard User nelix01
(committed) Sat 17-Sep-11 12:51:03
Print Post

Re: How do my stats look?


[re: jmgraham] [link to this post]
 
here's my latest:

xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Max: Upstream rate = 16807 Kbps, Downstream rate = 47104 Kbps
Path: 0, Upstream rate = 9995 Kbps, Downstream rate = 39999 Kbps

Discovery Phase (Initial) Band Plan
US: (0,95) (696,1183)
DS: (32,687) (1192,1627)
Medley Phase (Final) Band Plan
US: (0,95) (696,1183)
DS: (32,687) (1192,1627)
VDSL Port Details Upstream Downstream
Attainable Net Data Rate: 16807 kbps 47104 kbps
Actual Aggregate Tx Power: - 23.4 dBm 10.4 dBm
============================================================================
VDSL Band Status U0 U1 U2 U3 D1 D2 D3
Line Attenuation(dB): 2.7 8.9 N/A N/A 5.0 10.8 N/A
Signal Attenuation(dB): 0.0 8.0 N/A N/A 5.0 10.8 N/A
SNR Margin(dB): 20.6 20.5 N/A N/A 11.1 11.1 N/A
TX Power(dBm): -33.5 -23.7 N/A N/A 9.6 2.7 N/A

Standard User adebov
(eat-sleep-adslguide) Sun 18-Sep-11 16:41:09
Print Post

Re: How do my stats look?


[re: griff_90] [link to this post]
 
In reply to a post by griff_90:
As for there potentially being a problem what do you make of this -

http://img.photobucket.com/albums/v427/griff_90/0b5a...


Bob seems to be on the mark there.
If your attenuation is, indeed, 10dB (mine's 8.8dB for D1 and 19.8db for D2 - according to my modem) there must be something wrong.

My figures are
VDSL Port Details Upstream Downstream
Attainable Net Data Rate: 17475 kbps 47156 kbps
Actual Aggregate Tx Power: - 16.1 dBm 10.3 dBm
============================================================================
VDSL Band Status U0 U1 U2 U3 D1 D2 D3
Line Attenuation(dB): 3.6 16.0 N/A N/A 8.8 19.8 N/A

Signal Attenuation(dB): 0.0 14.9 N/A N/A 8.8 19.8 N/A

SNR Margin(dB): 21.8 21.8 N/A N/A 10.7 11.4 N/A

TX Power(dBm): -28.6 -16.5 N/A N/A 9.5 2.6 N/A


Your line (even assuming BT's 10dB figure was taken from the D1 figure and isn't an average across D1 and the tones used in D2) should be able to sync at maximum speed.

Your error stats aren't encouraging either.
Mine are
Line rate (kbit/s) 39999 9995
CRC errors 0 0
FEC errors 2850 177
HEC errors 6459 0

This is for a connected time of 190,000 seconds (basically since Friday lunchtime).
Either my zero CRC error count is a glitch (unlikely, given the fairly low FEC count) or your line is suffering from a fair bit of noise).

......Or the 10dB wasn't an accurate measurement in the first place.

Ade

vDSL2 FTTC Infinity with BT
DL Sync 40Mbps
UL Sync 10Mbps
Standard User griff_90
(fountain of knowledge) Sun 18-Sep-11 16:48:15
Print Post

Re: How do my stats look?


[re: adebov] [link to this post]
 
You should see my error count now!!

Uptime - 60 Hours
CRC Errors - 2,122,415
FEC Errors - 24,472
HEC Errors - 737,973

The copper run down to the cabinet is only 300 metres at most and I saw the original Attenuation level on the JDSU and it was definitely 10dB so I think it's clear there's an issue somewhere but getting someone to do anything about it is another matter entirely.
Standard User adebov
(eat-sleep-adslguide) Sun 18-Sep-11 17:32:01
Print Post

Re: How do my stats look?


[re: griff_90] [link to this post]
 
In reply to a post by griff_90:
You should see my error count now!!

Uptime - 60 Hours
CRC Errors - 2,122,415
FEC Errors - 24,472
HEC Errors - 737,973

The copper run down to the cabinet is only 300 metres at most and I saw the original Attenuation level on the JDSU and it was definitely 10dB so I think it's clear there's an issue somewhere but getting someone to do anything about it is another matter entirely.


Pretty much the same distance as my cabinet (don't know the actual line length as the installing engineer either didn't want to provide it, or didn't know how to measure it). At best, maybe 220 metres, at worst probably 320 metres (the attainable rates show our lines to be pretty much identical lengths).

My error count (after a 54 hour uptime) is now
CRC errors 0
FEC errors 2854
HEC errors 6460

So I'd tend to think you do have an issue.
Like you say, it's another matter getting someone to deal with it.

Ade

vDSL2 FTTC Infinity with BT
DL Sync 40Mbps
UL Sync 10Mbps
Standard User lockyatlrg
(fountain of knowledge) Sun 18-Sep-11 19:40:59
Print Post

Re: How do my stats look?


[re: jmgraham] [link to this post]
 
looking at your attenuation your line length is much more than 300 meters, having said that I'm shocked at your attainable rate, Downstream SNR margin. etc

BT Infinity
ROUTER:-Netgear WNDR37AV
Sync 40000D 10000U
Standard User jmgraham
(newbie) Sun 18-Sep-11 20:11:21
Print Post

Re: How do my stats look?


[re: lockyatlrg] [link to this post]
 
No idea why, are any cabinets upgraded to profile 17a yet, my cabinet has only been enabled for around a month.
Standard User lockyatlrg
(fountain of knowledge) Sun 18-Sep-11 20:23:31
Print Post

Re: How do my stats look?


[re: jmgraham] [link to this post]
 
I don't think it's anything to do with 17a profile, maybe an your on a empty cab, mine did say 52mbs attainable rate, but it's dropped and my cab is filling up rather quickly (lots of HH3 routers in the area). so it may just be down to crosstalk.

BT Infinity
ROUTER:-Netgear WNDR37AV
Sync 40000D 10000U
Standard User jmgraham
(newbie) Sun 18-Sep-11 20:28:52
Print Post

Re: How do my stats look?


[re: lockyatlrg] [link to this post]
 
Sounds about right, dont think there will be that many lines connected to my cabinet yet, never picked up many HH3 in my area.
Standard User Little_bird
(newbie) Tue 20-Sep-11 23:13:29
Print Post

Re: How do my stats look?


[re: jmgraham] [link to this post]
 
Hi All,

I have managed to unlock my modem & my stats are as follows:-

# xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Max: Upstream rate = 6101 Kbps, Downstream rate = 22156 Kbps
Path: 0, Upstream rate = 1997 Kbps, Downstream rate = 23449 Kbps

Discovery Phase (Initial) Band Plan
US: (0,95) (696,1183)
DS: (32,687) (1192,1627)
Medley Phase (Final) Band Plan
US: (0,95) (696,1183)
DS: (32,687) (1192,1627)
VDSL Port Details Upstream Downstream
Attainable Net Data Rate: 6101 kbps 22156 kbps
Actual Aggregate Tx Power: 1.3 dBm 9.8 dBm
============================================================================
VDSL Band Status U0 U1 U2 U3 D1 D2 D3
Line Attenuation(dB): 8.4 52.3 N/A N/A 21.4 65.3 N/A
Signal Attenuation(dB): 14.1 51.0 N/A N/A 21.4 65.3 N/A
SNR Margin(dB): 14.1 14.1 N/A N/A 4.4 4.4 N/A
TX Power(dBm): -9.2 0.9 N/A N/A 9.2 -1.5 N/A

I was obtaining much faster speeds at one time & I hope my stats can direct me toward where the problem is.

My line is apparently 800m to 1000m from the cabinet.


Pauline.
Standard User burakkucat
(member) Wed 21-Sep-11 04:49:22
Print Post

Re: How do my stats look?


[re: Little_bird] [link to this post]
 
Hello Little_bird. Are you the same Pauline who was previously posting in this thread as an anonymous user?

I've taken a look at your line statistics and they do not look too good. Sorry. frown

Although I don't have a FTTC VDSL connection, I do have a Huawei HG612 modem/router. (It's always worthwhile checking eBay -- I saw one sell for £66-00 recently!) Why have I got a HG612? For experimentation and to assist asbokid in his thorough analysis of the device. Between us, we now have a robust Linux based script to convert the raw data into some meaningful graphs. If you are interested, please send me a PM and I will let you know my e-mail address.

If you are unable to run a Linux bash-script, just capture the output of the following three xdslcmd commands and send it to me. I will then convert that data into the graphs and return them to you.

As you have previously done, telnet into the HG612, obtain a shell and capture the output of --
xdslcmd info --Bits
xdslcmd info --linediag
xdslcmd info --pbParams
As an example, you can see the graphs that I have created with the data obtained from my neighbour's VDSL line.

-----------------------------------------------------

100% Linux and, previously, Unix.
Standard User Little_bird
(newbie) Wed 21-Sep-11 06:26:02
Print Post

Re: How do my stats look?


[re: burakkucat] [link to this post]
 
Hi burakkucat,

I am indeed the same Pauline.

I am a Windows 7 user, but pehaps if you were able to let me have a copy of the Linux based script, I might be able to eventually convert it for use by normal Windows users.

I have very recently installed installed Cygwin so that I can run some Linux scripts, so with some minor tweaking I could probably run your script through that on my Windows 7 PC & run the graphs myself.

I have had all sorts of problems with my line & now having access to my stats & graphs might help in finding out where the problems lie in order to try to get my previous 30+Mb download speeds back again..

Reading various forums it appears that I am not alone with these problems of a good connection ending up with ADSL2+ type speeds.

I have been reading a very long thread in the Kitz forum started by a guy named Bald_Eagle1 who seems to have an identical problem:-
http://forum.kitz.co.uk/index.php/topic,9726.0.html

You now have my email address & thanks for your kind offer.
Also a big thanks to asbokid for making this at all possible.

It's a pity I couldn't look at my stats when my connection was working well to compare against its current poor performance.


Pauline

Edited by Little_bird (Wed 21-Sep-11 06:39:33)

Standard User Croftie
(regular) Wed 21-Sep-11 12:18:03
Print Post

Re: How do my stats look?


[re: Little_bird] [link to this post]
 
Hi,

I've also managed to unlock the modem, thanks asbokid, and would appreciate someone taking a look at the logs.

On install the JDSU said attainable rates were 46/15. I had full sync and profile for 8 months untill one night we had downtime due to network upgrades in the area. After this work we had download throughput 5Mbps lower and increased latency.

The stats are reporting max attainable rate to be 40/15 and there are some crc errors on the downnstream.

I have zipped 4 putty log files, the 3rd one looks a lot different than the others but I don't know what it means.
http://www.filesonic.com/file/2091112684

Line is Ali 300M with about 90 FTTC lines active and an extra card has just been installed.

I'm using windows xp but could install linux in a VM if you'd like to share the graph script. It would be handy to be able to create them everytime I check the stats.

Darren
Standard User burakkucat
(member) Wed 21-Sep-11 13:20:46
Print Post

Re: How do my stats look?


[re: Little_bird] [link to this post]
 
@Little_bird -- If you look in your in-box you will see that cats can be friendly with birds. wink

I hope the script is understandable to you, a Redmond OS user. If you need help, please let me know and I will see what I can do . . .

-----------------------------------------------------

100% Linux and, previously, Unix.
Standard User burakkucat
(member) Wed 21-Sep-11 13:43:32
Print Post

Re: How do my stats look?


[re: Croftie] [link to this post]
 
@Croftie -- Sorry but I am unable to download your zip file. The hosting site is proving to be uncooperative. frown

If you would like to do as Pauline has done and send me a PM with you e-mail address, I'll happily send you a copy of the current version of the script.

-----------------------------------------------------

100% Linux and, previously, Unix.
Standard User Zadeks
(committed) Wed 21-Sep-11 14:31:18
Print Post

Re: How do my stats look?


[re: burakkucat] [link to this post]
 
http://localhostr.com/file/fQr1kkJ/putty-logs.zip
Standard User Croftie
(regular) Wed 21-Sep-11 15:31:00
Print Post

Re: How do my stats look?


[re: burakkucat] [link to this post]
 
Sorry, I did try to find a direct link hoster. Zadeks link above looks much simpler, thanks both.
Standard User burakkucat
(member) Wed 21-Sep-11 17:37:12
Print Post

Re: How do my stats look?


[re: Zadeks] [link to this post]
 
Thanks, Zadeks. Zip file now downloaded. smile

-----------------------------------------------------

100% Linux and, previously, Unix.
Standard User burakkucat
(member) Wed 21-Sep-11 17:38:30
Print Post

Re: How do my stats look?


[re: Croftie] [link to this post]
 
@Croftie -- PM sent.

-----------------------------------------------------

100% Linux and, previously, Unix.
Standard User lockyatlrg
(fountain of knowledge) Wed 21-Sep-11 17:54:48
Print Post

Re: How do my stats look?


[re: Croftie] [link to this post]
 
my attainable rate was 52mbs when I first got activated, but there has been a large decline in that due to lots of vdsl lines in my area, thus plenty of crosstalk.

my line is between 350 to 400 meters.

So it seems that cross talk is taking a chunk of people attainable rate and sync speeds.

BT Infinity
ROUTER:-Netgear WNDR37AV
Sync 40000D 10000U
Standard User Croftie
(regular) Wed 21-Sep-11 22:28:15
Print Post

Re: How do my stats look?


[re: burakkucat] [link to this post]
 
burakkucat, cheers.
Standard User Croftie
(regular) Wed 21-Sep-11 22:42:19
Print Post

Re: How do my stats look?


[re: lockyatlrg] [link to this post]
 
Maybe, I'm reluctant to blame crosstalk because the drop occured overnight, during which there was downtime for several hours due to "network maintenance and upgrades" in my area. Since then the speed has returned and then gone back down again.

It's too much of a coincidence for my likeing, if it was crosstalk I would of thought the speed drop would be gradual and interleaving be applied first followed by a speed drop if necessary. Or is that not how it works?

Edit, also wouldn't the attainable UL speed drop aswell if it was crosstalk or are only the DL frequencys effected by crosstalk?

Cheers.

Edited by Croftie (Wed 21-Sep-11 22:48:02)

Standard User Little_bird
(newbie) Thu 22-Sep-11 00:37:15
Print Post

Re: How do my stats look?


[re: burakkucat] [link to this post]
 
In reply to a post by burakkucat:
@Little_bird -- If you look in your in-box you will see that cats can be friendly with birds. wink

I hope the script is understandable to you, a Redmond OS user. If you need help, please let me know and I will see what I can do . . .


Thanks burakkucat.
I have been playing with the script & Cygwin all night & am just struggling a little with one section of it to get it to be compatible with a Windows 7 PC.

It's probably something really obvious that I will have to tweak, but I just can't see it yet.

Pauline.
Standard User TheHorseman
(knowledge is power) Thu 22-Sep-11 12:46:30
Print Post

Re: More FTTC line stats


[re: mr_bean] [link to this post]
 
Finally got around to flashing my modem yesterday. Stats are:

# xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Max: Upstream rate = 17136 Kbps, Downstream rate = 48052 Kbps
Path: 0, Upstream rate = 9995 Kbps, Downstream rate = 39999 Kbps

Discovery Phase (Initial) Band Plan
US: (0,95) (696,1183)
DS: (32,687) (1192,1627)
Medley Phase (Final) Band Plan
US: (0,95) (696,1183)
DS: (32,687) (1192,1627)
VSDL Port Details Upstream Downstream
Attainable Net Data Rate: 17136 kbps 48052 kbps
Actual Aggregate Tx Power: - 16.7 dBm 7.7 dBm
============================================================================
VDSL Band Status U0 U1 U2 U3 D1 D2 D3
Line Attenuation(dB): 3.6 15.4 N/A N/A 7.9 18.9 N/A
signal Attenuation(dB): 0.0 14.4 N/A N/A 7.9 18.9 N/A
SNR Margin(dB): 22.1 22.0 N/A N/A 11.6 11.6 N/A
TX Power(dBm): -27.6 -17.0 N/A N/A 6.0 2.6 N/A
#

BT -> Zen -> F2S -> Bulldog -> Be* -> BT Infinity
Far too many computers, 1 Wife, 3 Maine Coons and too many horses smile
Standard User berrymwb
(newbie) Thu 22-Sep-11 20:18:46
Print Post

Re: More FTTC line stats


[re: TheHorseman] [link to this post]
 
I wonder if anyone can give me a little steer here as to whether everything seems in order. I've been connected for 3 weeks now, started at 37mb, just noticed I've dropped to 33mb. I'm about 600m from the cabinet.

The thing that confuses me is that my line always seemed stable, error rate for the afternoon was 100 CRC 6 FEC 30HEC, but is it normal for the max attainable rate to be higher than the sync speed like this when below the max 40mb speed?

I'm talktalk by the way.

Thanks for any insight. I'm really not an expert on these things. It took me a couple of hours to flash the modem and telnet in!

Cheers!

# xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 2
Max: Upstream rate = 15391 Kbps, Downstream rate = 38088 Kbps
Path: 0, Upstream rate = 1999 Kbps, Downstream rate = 33053 Kbps

Discovery Phase (Initial) Band Plan
US: (0,95) (696,1183)
DS: (32,687) (1192,1627)
Medley Phase (Final) Band Plan
US: (0,95) (696,1183)
DS: (32,687) (1192,1627)
VDSL Port Details Upstream Downstream
Attainable Net Data Rate: 15391 kbps 38088 kbps
Actual Aggregate Tx Power: - 5.9 dBm 9.6 dBm
============================================================================
VDSL Band Status U0 U1 U2 U3 D1 D2 D3
Line Attenuation(dB): 6.3 29.7 N/A N/A 14.7 37.2 N/A

Signal Attenuation(dB): 9.5 28.9 N/A N/A 14.7 37.2 N/A

SNR Margin(dB): 30.9 31.0 N/A N/A 6.0 5.9 N/A

TX Power(dBm): -18.4 -6.7 N/A N/A 8.6 2.6 N/A
Standard User lockyatlrg
(fountain of knowledge) Thu 22-Sep-11 21:14:16
Print Post

Re: More FTTC line stats


[re: berrymwb] [link to this post]
 
as more lines get vdsl2 it brings in crosstalk.

BT Infinity
ROUTER:-Netgear WNDR37AV
Sync 40000D 10000U
Standard User berrymwb
(newbie) Thu 22-Sep-11 23:18:01
Print Post

Re: More FTTC line stats


[re: lockyatlrg] [link to this post]
 
In reply to a post by lockyatlrg:
as more lines get vdsl2 it brings in crosstalk.


I suggest unlikely to be the issue here. Too recent for this estate.

And does it REALLY make that much difference?
Standard User lockyatlrg
(fountain of knowledge) Thu 22-Sep-11 23:30:39
Print Post

Re: More FTTC line stats


[re: berrymwb] [link to this post]
 
I really think that crosstalk is going to be a issue for people on longer lines.

My friends connection is 700 meters long with 0.5 copper.

his sync rate was 39999 and 9999.

Now the last couple of days this has dropped to 27mb.

There is well over a 100vdsl lines now connected on this cab and the bt eng I know said its down to crosstalk and seeing allot of highly populated cabs.

BT Infinity
ROUTER:-Netgear WNDR37AV
Sync 40000D 10000U
Standard User MHC
(legend) Thu 22-Sep-11 23:47:17
Print Post

Re: More FTTC line stats


[re: lockyatlrg] [link to this post]
 
That is a significant drop and would not have expected it. A 39999 sync suggest something over 40000 and to then drop by 35% to 27000 gives cause for concern.

No end of lab testing could show what to expect in the field and it is information like that which BT will be collecting and analysing.

Remember, BT were, and still are, a little hesitant about changing to the 17a (I think I'm right) profile as cross talk could be even more of an issue there.

I have also suffered a drop from 47000 to around 34000 ...





~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


M H C


taurus excreta cerebrum vincit
Standard User burakkucat
(member) Fri 23-Sep-11 05:09:33
Print Post

Re: How do my stats look?


[re: Little_bird] [link to this post]
 
In reply to a post by Little_bird:
I have been playing with the script & Cygwin all night & am just struggling a little with one section of it to get it to be compatible with a Windows 7 PC.
Hopefully you will soon resolve the problem and then be in a position to guide other non-Linux users with your modified script. smile

-----------------------------------------------------

100% Linux and, previously, Unix.
Standard User bhawkes
(newbie) Fri 23-Sep-11 14:49:54
Print Post

Re: How do my stats look?


[re: asbokid] [link to this post]
 
Thanks to 'asbokid' I have now flashed a SP06 with SP10 software and extracted some stats via Putty (telnet) :-

# /bin/xdslcmd info --pbParams
/bin/xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason:0
Max:Upstream rate = 17662 Kbps, Downstream rate = 47304 Kbps
Path:0, Upstream rate = 9999 Kbps, Downstream rate = 39999 Kbps

Discovery Phase (Initial) Band Plan
US: (0,95) (696,1183)
DS: (32,687) (1192,1627)
Medley Phase (Final) Band Plan
US: (0,95) (696,1183)
DS: (32,687) (1192,1627)
VDSL Port Details Upstream Downstream
Attainable Net Data Rate: 17662 kbps 47304 kbps
Actual Aggregate Tx Power: - 18.1 dBm 5.4 dBm
============================================================================
VDSL Band Status U0 U1 U2 U3 D1 D2 D3
Line Attenuation(dB): 3.4 14.1 N/A N/A 7.8 17.7 N/A
Signal Attenuation(dB): 0.0 13.1 N/A N/A 7.8 17.7 N/A
SNR Margin(dB): 17.2 17.2 N/A N/A 10.9 11.0 N/A
TX Power(dBm):-29.1-18.4 N/A N/A 1.8 2.9 N/A
#

Status pic:-

[IMG]http://i1119.photobucket.com/albums/k631/44_bh/OR_st...[/IMG]

If poss I would like to get the graphs also if I obtain the necessary output.
Standard User bhawkes
(newbie) Fri 23-Sep-11 15:21:58
Print Post

Re: Success! Telnet log..


[re: asbokid] [link to this post]
 
asbokid,

Any chance of the scripts for piping linediag info to gnuplot? I could also email the log to your email if you wish.
Standard User asbokid
(regular) Fri 23-Sep-11 18:26:52
Print Post

Re: Success! Telnet log..


[re: bhawkes] [link to this post]
 
Hi BHawkes,

Burakkucat and Little_Bird have greatly improved the gnuplot scripts (for Linux and Windows, respectively).

I'm sure they would be happy to pass them on to you smile

Cheers, A
Standard User burakkucat
(member) Fri 23-Sep-11 19:41:44
Print Post

Re: Success! Telnet log..


[re: asbokid] [link to this post]
 
@asbokid,

Perhaps, between the three of us, we could host both variants of the script at a suitable location such that anyone can just download a copy?

Would you be able to do so from your HG612 Google docs location? smile

-----------------------------------------------------

100% Linux and, previously, Unix.
Standard User Croftie
(regular) Fri 23-Sep-11 20:51:08
Print Post

Re: Success! Telnet log..


[re: burakkucat] [link to this post]
 
Could someone have a quick look at my stats for any problems? I'm hopeing they can answer why I've had a 5 Mbps downstream drop overnight following 8 months of solid full line speed.

On install the attainable rate was 46/15 on the JDSU and looking at the stats on the modem now that's dropped to 40/15. Also the line rate is 5 Mbps below attainable is that normal?

http://i53.tinypic.com/21m9fu8.jpg
http://i52.tinypic.com/91a2wp.jpg
http://i51.tinypic.com/2ryt5xl.jpg

Little_bird, I probably can't help with converting the script but if your stuck I could try.
Standard User asbokid
(regular) Fri 23-Sep-11 21:12:46
Print Post

Re: Success! Telnet log..


[re: burakkucat] [link to this post]
 
Hi, burakkucat,

Will do...

The latest gnuplot scripts are available here...

https://docs.google.com/leaf?id=0B6wW18mYskvBODZjMTk... (Huawei HG612 graphing scripts)

If anyone else wants to improve the scripts or contribute new ones, please contact and the contents of the Google Docs 'folder' can be made editable for you.

Cheers, a
Standard User mr_bean
(member) Fri 23-Sep-11 21:20:21
Print Post

Re: More FTTC line stats


[re: MHC] [link to this post]
 
I think part of the problem is that a drop of, say, 3dB in SNR is a lot of bps on a VDSL line because of the higher number of bins in use.

It's been complicated by the fact that my modem died 2 weeks ago and I'm slightly suspicious as it changed pretty much overnight but I've gone from 39999 to 34980Kbps - this has been accompanied by a 3dB increase in Quiet Line Noise across the whole frequency spectrum - crosstalk has to be high on the list of suspects for this change.

To be fair 35Mpbs is still more than the original DSL checker estimate of 26Mbps but I'm still gutted to see 12.5% of my sync speed disappear overnight.

As for 17a - it will be interesting to see how BT implement that given their use of band plan 997 truncated down to 7Mhz - it might be that all lines on a given cabinet have to be the same profile - either 8c or 17a
Standard User mr_bean
(member) Fri 23-Sep-11 21:30:32
Print Post

Re: Success! Telnet log..


[re: Croftie] [link to this post]
 
Could someone have a quick look at my stats for any problems? I'm hopeing they can answer why I've had a 5 Mbps downstream drop overnight following 8 months of solid full line speed.
It's probably not possible to say why the drop in speed just looking at a single set of line stats - ideally you'd have some available from when you were syncing at 40.

I deeply sympathise because that's exactly what's just happened to me - luckily I do have old stats to compare and it's obvious from these that I've just "gained" about 3dB of noise across the whole VDSl spectrum. While it's not certain the suspicion has to be that it's due to increased crosstalk and probably is in your case also.

As to "attainable" being higher than the actual sync that's normal. The attainable rate is what you'd get at 0dB SNRM, so it's always going to be higher than the sync rate (unless noise has increased by more than the target SNRM, usually 6dB, since sync took place).
Standard User lockyatlrg
(fountain of knowledge) Fri 23-Sep-11 21:46:34
Print Post

Re: More FTTC line stats


[re: mr_bean] [link to this post]
 
my attainable rate his declined sharply, it's down to crosstalk IMO, I get 0 errors.

The reason I 'm still seeing well over 40mb attainable rate is due to being close to the cab and my line can take a hit like that from crosstalk.

BT Infinity
ROUTER:-Netgear WNDR37AV
Sync 40000D 10000U
Standard User Little_bird
(newbie) Sat 24-Sep-11 06:40:34
Print Post

Re: Success! Telnet log..


[re: asbokid] [link to this post]
 
In reply to a post by asbokid:
Hi, burakkucat,

Will do...

The latest gnuplot scripts are available here...

https://docs.google.com/leaf?id=0B6wW18mYskvBODZjMTk... (Huawei HG612 graphing scripts)

If anyone else wants to improve the scripts or contribute new ones, please contact and the contents of the Google Docs 'folder' can be made editable for you.

Cheers, a



Thanks for that asbokid.

Windows users can use this Linux script if you install Cygwin (possibly also other alternatives) to provide a Linux shell without having to install a full Linux operating system.

I am trying to create a Windows batch file that does the same thing without the need to install Cygwin (mainly for automatically editing & splitting the terminal log file for each graph), but am struggling to get arrays to work within the batch file.
It CAN be done, but I haven't sussed it yet.

When/if I do manage to sort it, I will add it to asbo's script page.

If anyone who actually knows what they are doing (unlike me) fancies converting the Linux script to a Windows/DOS batch file, please let us know.

As Linux text files don't display correctly in Windows Notepad text editor (LF/CR issues), a free version of TextPad can be downloaded that does work, & can be set to show line numbers (useful for debugging), or use a Unix to DOS text file converter such as Tofrodos.


Pauline.
Standard User bhawkes
(newbie) Sat 24-Sep-11 10:15:18
Print Post

Re: Success! Telnet log..


[re: Little_bird] [link to this post]
 
Thanks for graph data.

My graphs:-

[img]http://i1119.photobucket.com/albums/k631/44_bh/line_...[/img]
Anonymous
(Unregistered)Sat 24-Sep-11 18:58:09
Print Post

Re: Success! Telnet log..


[re: bhawkes] [link to this post]
 
I know of someone who complained to BT regarding not getting fttc due to the checker - he stated his line length was the same as someone who has fttc - the reply back was the checker takes into consideration cable fill and that early adopters would see a decline in speeds once more people in the bunch asked for fibre hence was at distance x he could get 15meg today but 6months down the line wouldnt.
Half BS - as we now see people being put up to infinity when the bt has said option 3 with fibre only - but the cable fill / added cross talk may well just be due to more subscribers and hence not an issue you would ever get bt to accept without going sub 15meg.
Standard User Icaras
(learned) Sat 24-Sep-11 19:34:01
Print Post

Re: Success! Telnet log..


[re: Anonymous] [link to this post]
 
Sorry guys but I can't see instructions on how to actually do the flashing. Can someone post a link please.
Standard User burakkucat
(member) Sat 24-Sep-11 19:55:42
Print Post

Re: Success! Telnet log..


[re: Icaras] [link to this post]
 
In reply to a post by Icaras:
Sorry guys but I can't see instructions on how to actually do the flashing. Can someone post a link please.
You should find the instructions as a PDF format file with the actual firmware, when you download the relevant package.

-----------------------------------------------------

100% Linux and, previously, Unix.
Standard User Al1264
(newbie) Sat 24-Sep-11 20:09:45
Print Post

Re: Success! Telnet log..


[re: burakkucat] [link to this post]
 
I found the instructions OK (as advised, in the download zipfile), my question is about versions of the BT Fibre Modem; is the 'Version' the large print in a square on the top right of the large central label on the rear of the unit? If that mine (just installed earlier this week) is marked '3B', is there any risk in the procedure on a new updated version?
It does appear to be labelled with the same (SP10) firmware so I assume it's safe, any thoughts? Anyone else seen this version or, more importantly, flashed it?

Thanks, Al.
Standard User burakkucat
(member) Sat 24-Sep-11 20:30:08
Print Post

Re: Success! Telnet log..


[re: Al1264] [link to this post]
 
In reply to a post by Al1264:
my question is about versions of the BT Fibre Modem; is the 'Version' the large print in a square on the top right of the large central label on the rear of the unit? If that mine (just installed earlier this week) is marked '3B', is there any risk in the procedure on a new updated version?
It does appear to be labelled with the same (SP10) firmware so I assume it's safe, any thoughts? Anyone else seen this version or, more importantly, flashed it?
To be on the safe side, would you be able to take a suitable quality photograph of the label on the underside of the HG612 and make it accessible for viewing?

Also, do you still have the box that it came in? (There are relevant identifying numbers on the labels at each end of the box. Photographs of them both would be useful.)

Asbokid will be the best person to comment, as he is compiling a table of hardware and firmware versions.

-----------------------------------------------------

100% Linux and, previously, Unix.

Edited by burakkucat (Sat 24-Sep-11 20:46:24)

Standard User bhawkes
(newbie) Sun 25-Sep-11 17:22:25
Print Post

Re: Success! Telnet log..


[re: Little_bird] [link to this post]
 
Little_bird,

I can successfully produce graphs from 'graph.sh' and my 'putty.log' using Ubuntu on my second PC (see post below) but am now trying to do the same using Cygwin under Win7 on my main PC.

I have installed gnuplot within Cygwin and have graph.sh and putty.log in the home directory but I get the following:-

$ ./graph.sh putty.log
Invalid parameter - bits.jpg
Invalid parameter - snr.jpg
Invalid parameter - qln.jpg
Invalid parameter hlog.jpg
#

Any ideas what I'm doing wrong?
Standard User asbokid
(regular) Sun 25-Sep-11 17:53:13
Print Post

Re: Success! Telnet log..


[re: Al1264] [link to this post]
 
In reply to a post by Al1264:
I found the instructions OK (as advised, in the download zipfile), my question is about versions of the BT Fibre Modem; is the 'Version' the large print in a square on the top right of the large central label on the rear of the unit? If that mine (just installed earlier this week) is marked '3B', is there any risk in the procedure on a new updated version?

It does appear to be labelled with the same (SP10) firmware so I assume it's safe, any thoughts? Anyone else seen this version or, more importantly, flashed it?


Hi Al,

It sounds like you have a hitherto unseen Revision "3B" of the Huawei HG612.

New territory.. I have no idea whether unlocking will work with Revision "3B".

If you want to be on the 'safe' side, before trying to re-flash, you could backup the flash contents. That involves opening the modem, soldering in some header pins and extracting the flash contents via UART or JTAG. If you're not willing to do that, it's a case of suck-it-and-see, I'm afraid.

We now have four hardware revisions to the HG612..

Revision 1 (unlabelled as such)
Revision "2V"
Revision "2B"
Revision "3B"

The label on the bottom of the modem holds a surprising amount of information. As burakkucat has recommended, it would be good to photograph the label and email or upload it. If you have concerns over privacy, you could 'smudge' the last few digits of the MAC address and the last two or three digits of the Serial Number.

Sorry I have no answers. frown

Cheers, A
Standard User Little_bird
(newbie) Sun 25-Sep-11 18:27:47
Print Post

Re: Success! Telnet log..


[re: bhawkes] [link to this post]
 
Hi bhawkes,

How are your starting Cygwin?

If it is from an icon on your desktop, that is probably the folder you will be in when you start it (not where the relevant files are stored.

I am guessing you are not in the same folder as the Jpegs when graph.sh tries to create a montage of them.

I have added C:\cygwin\bin & C:\Program Files\ImageMagick-6.7.2-Q16; ;C:\Program Files\gnuplot\binary to my PATH in Windows 7 so it doesn't matter which folder I am in, I always have access to them.

I access Cygwin by typing Cygwin from the Command Prompt.
The problem is that if you start a command prompt from Start, Run, Cmd, you end up in your own user folder.

I have created a simple batch file that just contains cmd on the first line.
I have named it DosWindowThisFolder.BAT, but it could be named anything you want.

In Windows, I go to the folder where everyting is stored, double click the DosWindowThisFolder.BAT icon & I end up in Cygwin in the folder where everything is stored.

In Cygwin you could check what files are available in whatever folder you are in by typing "ls" (without the quote marks).

There may be a better way to do things, but the above way works for me.

HTH,

Pauline.

P.S. I have been playing about with a Windows batch file again to try to replicate what graph.sh does without having to install Cygwin/Ubuntu etc.

I gave to use gawk & other programs (from elsewhere) instead of awk & tr as used in graph.sh to get it to work at all when just using Windows, & I'm not happy with it yet.
Standard User bhawkes
(newbie) Mon 26-Sep-11 20:50:39
Print Post

Re: Success! Telnet log..


[re: Little_bird] [link to this post]
 
I was not aware that I needed ImageMagick as well as GnuPlot.

I have now added that to the GnuPlot previously installed (both within the Cygwin installation not Win7) and now have successfully produced the graphs. The versions of GnuPlot and ImageMagick included within the Cygwin instal are both earlier versions than the current but they work. Cygwin opens in my home directory where I put the graph.sh and putty.log files and where the .jpg files are produced. With GnuPlot and ImageMagick being installed under the Cugwin umbrella there is no need to modify the PATH parameter.
Standard User Croftie
(regular) Tue 27-Sep-11 00:01:26
Print Post

Re: Success! Telnet log..


[re: mr_bean] [link to this post]
 
In reply to a post by mr_bean:
It's probably not possible to say why the drop in speed just looking at a single set of line stats

I was hopeing for a better insight into a possible cause because in my case it coincided with downtime...
In reply to a post by Croftie:
full sync and profile for 8 months untill one night we had downtime due to network upgrades in the area. After this work we had download throughput 5Mbps lower and increased latency.


asbokid seemes to interpret the graphs here which is why I ask.

I agree a before and after would be ideal, unfortunatly there wasn't a way to access the modem before the loss.

In reply to a post by mr_bean:
As to "attainable" being higher than the actual sync that's normal. The attainable rate is what you'd get at 0dB SNRM, so it's always going to be higher than the sync rate (unless noise has increased by more than the target SNRM, usually 6dB, since sync took place).

I know it's normal for attainable to be higher than sync, I asked if it was normal for the gap to be so large. As of this morning though the gap has narrowed.

The last few days I've been getting a lot of errors, mostly crc.

http://i51.tinypic.com/2qu3yaa.jpg

Then this morning I login to check the stats, the hub and modem uptime hasn't changed but the dsl uptime has. The attainable rate has dropped a bit and line rate has gone up by 4 Mbps. Taking the gap to just a few hundered Kb instead of several Mb.

http://i56.tinypic.com/302yrcz.jpg

IP Profile is still 33827 but I have an extra 0.5 Mbps downstream throughput and latency has been reduced by 8 ms.

Here are stats graphs from before and after the change.
http://i51.tinypic.com/2ryt5xl.jpg
http://i53.tinypic.com/125kryh.jpg

Last time I had this performance 30 days later the IP Profile changed to 37616 which, after 10 days dropped to 33730 along with increased latency.

It's probaly hard to follow my back story because it's spread accross two threads but there is a pattern here and thanks to asbokid I can now log it in more detail. It will be interesting now to see if the IP Profile gets raised again and if it will stay there or whether this up/down cycle triggered by network downtime in june will continue.

Thanks.
croftie
Standard User Croftie
(regular) Tue 27-Sep-11 00:09:44
Print Post

Re: Success! Telnet log..


[re: Little_bird] [link to this post]
 
In reply to a post by Little_bird:
As Linux text files don't display correctly in Windows Notepad text editor (LF/CR issues), a free version of TextPad can be downloaded that does work, & can be set to show line numbers (useful for debugging), or use a Unix to DOS text file converter such as Tofrodos.

It is shocking how bad windows default text editor still is. FWIW, I've been using notepad2 for years which is in another legue despite a small footprint. It can display linux text files properly and convert line ending too.
Standard User Little_bird
(newbie) Tue 27-Sep-11 06:26:30
Print Post

Re: Success! Telnet log..


[re: Croftie] [link to this post]
 
I had "reasonable" 30+Mb download speeds at first, but following a number of faults on my line I am now stuck at around 20-22Mb actual download speeds.

here

I couldn't access the stats when my speeds were better, but 2 quite recent graphs can be seen at :-

https://docs.google.com/leaf?id=0B7Kcea04kkOEYWJmNDU...


https://docs.google.com/leaf?id=0B7Kcea04kkOENWU5NGE...

It seems like I am doing O.K. at ADSL2+ frequencies, but hardly getting anything at all from the VDSL2 frequencies when compared against others with high speeds.

My attenuation seems quite high in band D1 & really high in band D2

Pauline

Edited by Little_bird (Tue 27-Sep-11 06:35:46)

Standard User Al1264
(newbie) Tue 27-Sep-11 09:14:46
Print Post

Re: Success! Telnet log..


[re: asbokid] [link to this post]
 
Good news all, version 3B can be flashed and unlocked just like the others. I'll sort out a photo of the underside shortly for info.

Due to my excess curiosity I have now discovered a method to lock out the modem completely (D'ough!) which does not seem to be cured by re-flashing or resetting - any suggestions welcome:
As I can no longer access the interface I'm not 100% sure of the wording on the screen but on the LAN settings page there are two tick boxes for LAN1 & LAN2, if you select the 'Internet' connection in the drop-down box then tick both LAN1 and LAN2 the modem will work just fine, you can use either LAN port to connect your router BUT you cannot then access the router in any way as far as I can determine - don't do it! This appears to set both LAN ports as 'pure bridge' to the WAN (DSL) port - apart from locking out access to the router I cannot think of any possible use for this 'function'.

- Al

[Edit] P.S. many thanks to all those contributing their valuable time and effort to this 'project'.

Edited by Al1264 (Tue 27-Sep-11 09:46:28)

Standard User mr_bean
(member) Tue 27-Sep-11 09:55:43
Print Post

Re: Success! Telnet log..


[re: Croftie] [link to this post]
 
I was hopeing for a better insight into a possible cause because in my case it coincided with downtime...
Sorry.

Attenuation looks OK, lower than mine which is about 38dB for D2 - I'd guess about a 400m loop length.

What's killing you compared to me is high noise. You have fairly high broad-spectrum noise, about 8-10dB higher under about bin 500 which is probably ADSL2+ crosstalk and then falls off to about -120dBm/Hz across the board. I don't know for sure but this is probably mainly VDSL crosstalk. I don't think any band predominates apart from the ADSL2+ frequencies so it's probably not an external source of interference.

Your current SNRM is 6.3dB so your target SNRM is likely to be 6dB. Therefore you're not paying any "DLM penalty" for previous instability.

How you map that to exactly why your sync has gone down I don't know. If your attenuation had gone up perhaps one would look to disturbed joints but it looks quite good at the moment. As the main problem is noise which looks fairly broad-spectrum it could be the issue is increased cross-talk.

I know it's normal for attainable to be higher than sync, I asked if it was normal for the gap to be so large. As of this morning though the gap has narrowed.
It bounces around a bit. The higher the SNRM the wider the gap between current and attainable but squishing figures from over 1600 bins into a single SNRM makes the relationship difficult to follow.

Originally my "attainable" was 41-42Mbps for a sync of 39999Kbps. Then my modem died and in doing so convinced the DLM to set a 9dB SNRM target. At that point the attainable was about 40.2, sync around 35Mbps and SNRM around 9dB. Then the modem was changed and briefly sync went to 37 with a 6dB margin and, again an attainable of 40.2-40.7Mbps.

Then something odd happened overnight and the DLM went to a 12dB margin, sync crashed to 20's - I was so peeved at that I didn't really look at the attainable!

Following a DLM reset it went to attainable 40Mpbs, sync 35Mbps, SNRM 6dB, then slipped to attainable 38Mbps sync 33 (grrr!) last weekend still at a SNRM of 6dB. Currently sitting at attainable 37 (lowest it's been) but sync just over 36 (go figure) SNRM still 6.

So for a SNRM of 6dB (or thereabouts) I've had a gap between attainable of anything from 1-5Mbps. I suspect if I had all the graphs from all the points in the tale I'd be able to figure it out but lacking that it just looks a bit random. In the figures you gave it was about 6Mbps at 6.3dB SNRM which is similar to how mine was at one point.

Unfortunately I suspect we're both suffering from increased FTTC take-up. I'd be really interested to know how many people now have FTTC on my cab and on the link to whichever DP I'm on. ADSL speeds here were rubbish previously owing to long (~5Km) lines so I had expected a healthy uptake. Sadly I doubt there's any way of finding out.
Standard User asbokid
(regular) Tue 27-Sep-11 17:33:15
Print Post

Re: Success! Telnet log..


[re: Al1264] [link to this post]
 
In reply to a post by Al1264:
Good news all, version 3B can be flashed and unlocked just like the others. I'll sort out a photo of the underside shortly for info.

Due to my excess curiosity I have now discovered a method to lock out the modem completely (D'ough!) which does not seem to be cured by re-flashing or resetting - any suggestions welcome:


Good news that the 3B can be re-flashed. It is always possible to restore from a 'point-of-no-return' by doing a long reset.

You can restore the Default Configuration with a 'Long Reset'.

This works on both the SP06 and the SP10 firmware versions for the Huawei HG612:

  • Give the modem time to reboot.
  • Check with your PC that the xDSL line has synced, and that you have internet connectivity
  • Hold in the Reset Button on the front of the HG612 for 10+ seconds, and then release it.
  • This causes a 'Long Reset'.
  • The modem will replace the current Configuration settings with the Default Configuration.
  • Give the modem time to reboot again after the 'Long Reset'
  • Visit http://192.168.1.1 (the address of Huawei's web interface).
  • You can now access all the configuration options for the modem.


I wonder what was selected. Perhaps you changed the IP address / subnet of the modem?
Standard User nelix01
(committed) Tue 27-Sep-11 20:13:39
Print Post

Re: How do my stats look?


[re: Little_bird] [link to this post]
 
Does anyone remember how to find out what profile is applied to their line from all the new information available?

Standard User griff_90
(fountain of knowledge) Wed 28-Sep-11 13:32:07
Print Post

Re: My new stats..


[re: griff_90] [link to this post]
 
To cut a long story short I've had a series of OR engineers visit over the last week and today they found a fault in the line running to the cabinet. This has been swapped over and tested with an EXFO which reported no errors on this line.

As a result these are my new stats -

OLD (as per post above this one) - http://img.photobucket.com/albums/v427/griff_90/1de0...

New - http://img.photobucket.com/albums/v427/griff_90/097e...
Standard User undecidedadrian
(regular) Wed 28-Sep-11 14:49:00
Print Post

Re: How do my stats look?


[re: nelix01] [link to this post]
 
could something be added to the firmware to make it report the VDSL profile as here are my stats from a Vigor 2750n and it clearly states 8c.

I was the first person on my cab 2 weeks ago and just this week looks like cross talk has just started with a small drop in the noise ratios and max attainables.

Also I have no idea iwhat the rest of the numbers mean so can anybody comment?

VDSL
Link Status Showtime
Firmware Version 1411f0
VDSL2 Profile 8c
Basic Status Upstream Downstream Unit
Actual Data Rate 9994 39985 Kb/s
SNR 188 150 0.1dB
Advance Status Upstream Downstream Unit
Actual delay 0 0 ms
Actual INP 0 0 0.1 symbols
15M CV 0 2 counter
1Day CV 25 361 counter
15M FEC 0 22 counter
1Day FEC 39 127163 counter
Total FEC 4450 2044199 counter
Previous Data Rate 9994 39985 Kbps
Attainable Rate 16174 50677 Kbps
Electrical Length 66 66 0.1 dB
SNR Margin 188 N/A (US0,--) 0.1 dB
SNR Margin 188 150 (US1,DS1) 0.1 dB
SNR Margin N/A 149 (US2,DS2) 0.1 dB
SNR Margin N/A N/A (US3,DS3) 0.1 dB
SNR Margin N/A N/A (US4,DS4) 0.1 dB
15M Elapsed time 811 811 secs
15M FECS 0 3 counter
15M ES 0 2 counter
15M SES 0 0 counter
15M LOSS 0 0 counter
15M UAS 0 0 counter
1Day Elapsed time 82711 82711 secs
1Day FECS 27 441 counter
1Day ES 23 279 counter
1Day SES 0 0 counter
1Day LOSS 0 0 counter
1Day UAS 0 0 counter
Total FECS 327 6409 counter
Total ES 265 3280 counter
Total SES 0 32 counter
Total LOSS 0 4 counter
Total UAS 238296 100 counter
Standard User Little_bird
(newbie) Wed 28-Sep-11 16:38:52
Print Post

Re: How do my stats look?


[re: undecidedadrian] [link to this post]
 
Hi undecidedadrian,

If you are meaning via the HG612, amongst other details, you can obtain the VDSL2 profile already:-


# xdslcmd info --show

xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 2
Max: Upstream rate = 5881 Kbps, Downstream rate = 23340 Kbps
Path: 0, Upstream rate = 1997 Kbps, Downstream rate = 20621 Kbps

Link Power State: L0
Mode: VDSL2 Annex B
VDSL2 Profile: Profile 8c
TPS-TC: PTM Mode
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 5.7 13.8
Attn(dB): 0.0 0.0
Pwr(dBm): 9.6 1.3


Pauline

Edited by Little_bird (Wed 28-Sep-11 16:40:57)

Standard User Croftie
(regular) Thu 29-Sep-11 00:45:03
Print Post

Re: Success! Telnet log..


[re: Little_bird] [link to this post]
 
Was the profile reset when the faults were fixed? Might get you some performance back now that yout line is fault free.

I don't really understand how to interperet the graphs at all, what represents attenuation?
Standard User Croftie
(regular) Thu 29-Sep-11 01:06:08
Print Post

Re: Success! Telnet log..


[re: mr_bean] [link to this post]
 
Thanks mr_bean, it seems there is nothing to indicate a fault or anything out of the ordinary. I suppose I just have to chalk it up to crosstalk.

I think it will always bug me that the drop coincided with network maintenance downtime though, I wonder if it's possible that there was a glitch in the dlm that meant it wasn't changeing and the downtime somehow cleared it out.

Your best bet for finding out the fttc uptake on your cab is probably to intercept an OR engineer in your area. I don't think they are too shy about discussing uptake, the chap I spoke to wasn't anyway.
Standard User mr_bean
(member) Thu 29-Sep-11 09:18:50
Print Post

Re: Success! Telnet log..


[re: Croftie] [link to this post]
 
I think it will always bug me that the drop coincided with network maintenance downtime though, I wonder if it's possible that there was a glitch in the dlm that meant it wasn't changeing and the downtime somehow cleared it out.
If it's any consolation the exact same thing has happened to me - rock solid at 39995Kbps until the modem threw a wobbly and needed replacing and I know exactly how you feel about the "coincidence" :-/
Standard User mr_bean
(member) Thu 29-Sep-11 09:21:39
Print Post

Re: Success! Telnet log..


[re: Croftie] [link to this post]
 
I don't really understand how to interperet the graphs at all, what represents attenuation?
The Hlog graph, although it's an amalgamation of several performance characteristics, not purely attenuation
Standard User Al1264
(newbie) Thu 29-Sep-11 10:02:49
Print Post

Re: Success! Telnet log..


[re: asbokid] [link to this post]
 
In reply to a post by asbokid:
You can restore the Default Configuration with a 'Long Reset'...
...I wonder what was selected. Perhaps you changed the IP address / subnet of the modem?

@asbokid; I am forever in your debt.
I had tried what I thought was a long reset but possibly hadn't waited for the connection to be established fully first and, yes, I had changed the IP address into a range to suit my setup but I could not seem to get back into the interface with either the old or new address.
All fixed now, thanks a million, Al.
Standard User Al1264
(newbie) Thu 29-Sep-11 10:18:12
Print Post

Re: Success! Telnet log..


[re: Al1264] [link to this post]
 
Just out of interest, has anyone tried using 'Routerstats' to track SNRM and attainable rate on an unlocked HG612?

Sorry if this has been done and previously mentioned, I've scanned most of the posts in this thread but it's getting very long now.

I'll have a go myself just as soon as I can find another ethernet cable.

- Al.
Standard User Little_bird
(newbie) Thu 29-Sep-11 11:03:44
Print Post

Re: Success! Telnet log..


[re: Little_bird] [link to this post]
 
More problems:-

Downloads currently around 13Mb!!!!!!!!!!!

Today's graphs:-

graphs from 29-09-2011

Pauline.
Standard User asbokid
(regular) Thu 29-Sep-11 22:06:44
Print Post

Re: Success! Telnet log..


[re: Al1264] [link to this post]
 
Glad it worked for you, and your new 3B Huawei, Al!

Some newer docs for unlocking the Huawei have been put together.. There's a bit more explanation about the use of a 'long reset' to restore default configuration.[1]

Maybe it's worth asking John Owen, the author of Router Stats, what his plans are for his utility, and whether he intends to get it working with the Broadcom 6368 VDSL2 chipset. I would have patched the tool myself, but the code for RouterStats is closed source and John won't budge on that.

However, I'm some way through patching another tool, DMT, [2] to work with VDSL2..

It's a case of solving a few memory allocation problems, and trying to find enough real estate on the screen for all the extra data for VDSL2.

DMT was originally written for ADSL, but it has been modified for ADSL2 and ADSL2+. The latter only has 512 sub-carriers. So the Tone Maps are modest in size, and the graph functions of DMT are hard-coded with that tone limit in mind.

Whereas for VDSL2, there can be 4096 tones, potentially. In fact, the Huawei allocates memory for that number by default, even though VDSL2 Profile 8c, as used by Blighty Telecom, uses less than half that tone count. I've scoured the DMT code for obvious hard coded limitations in array declarations.. but there are more subtle issues..

May I ask: do you (and others) have a favourite tool for displaying/graphing/logging subscriber line stats? And if you do have a fave, what makes the tool special?

Cheers,a

[1] https://docs.google.com/leaf?id=0B6wW18mYskvBODZjMTk...
[2] http://dmt.mhilfe.de/

Edited by asbokid (Thu 29-Sep-11 22:12:37)

Standard User jchamier
(knowledge is power) Thu 29-Sep-11 22:08:55
Print Post

Re: Success! Telnet log..


[re: asbokid] [link to this post]
 
In reply to a post by asbokid:
May I ask: do you (and others) have a favourite tool for displaying/graphing/logging subscriber line stats? And if you do have a fave, what makes the tool special?


RouterStats - because the developer (john) is on these forums, and I think his handle is John_ON:
http://www.vwlowen.co.uk/internet/files.htm

It might be worth PMing him?

James - be* pro - on THFB - sync about 17.2mbps - BQM
Standard User Little_bird
(newbie) Thu 29-Sep-11 22:48:51
Print Post

Re: Success! Telnet log..


[re: asbokid] [link to this post]
 
Hi asbokid,

Just a thought regarding the unlocking instructions:-

You may wish to include a very small section that describes how you can have the usual router's ethernet connection plugged into LAN1 & another cable from a spare router port plugged into LAN2 so that internet browsing/emailing can continue at the same time as moving around in the modem's web pages.
That is how mine is set up.

BTW, I liked DMT when I had ADSL1 as it showed everything I wanted to see & also allowed easy access to tweaking SNR for eeking the extra few K from your connection.
That was the only way I managed to achieve reasonably stable 1.0Mb, yes, that was 1.0 Mb download speeds.
Prior to using DMT Tool I only achieved between 0.5Mb & 0.75(ish)Mb.


Pauline.
Standard User Croftie
(regular) Thu 29-Sep-11 23:41:08
Print Post

Re: Success! Telnet log..


[re: mr_bean] [link to this post]
 
Ok thanks.

The unlocked modem interface really showing it's worth tonight, without it I'd be no the wiser of any change at all..

DSL uptime reset at 6PM tonight, attainable, IP Profile, throughput and latency are the same. SNRM is now 7 and line rate has dropped a bit.

Stats and graphs from before and after:

http://i51.tinypic.com/4q2rl.jpg
http://i54.tinypic.com/243mh3r.jpg
http://i53.tinypic.com/125kryh.jpg
http://i51.tinypic.com/e8jpmh.jpg

I lot more FEC and HEC errors in the last 4 hours than the previous 3 days. No CRC's yet though.

If I have interpreted the graphs right, on the bit loading there is some loss which is mainly around the adsl frequencies. that's increaded crosstalk isn't it?
Standard User asbokid
(regular) Fri 30-Sep-11 00:12:41
Print Post

Re: Success! Telnet log..


[re: Little_bird] [link to this post]
 
Hi Little_Bird.. You're right, the cable configuration does need explaining properly.. Don't suppose, erm, you would like to write it?!

As for DMT, it seems to be the most powerful open source tool that is available.. As with most parsing/scraping tools, it looks pretty ugly under the bonnet, and the slightest sneeze or hiccup during scraping causes a catastrophic collapse. But I do like the GUI of DMT. With all those levers and knobs, it feels like you're flying a 747! And structurally it's been built in a traditional Unix fashion with the front end isolated from the daemon, so you can leave it running and logging line stats on a headless system if required..

I'm really up for patching DMT for the Huawei and for the 6368 VDSL2 chipset in general. DMT is written in C and only needs libpng, librrd and libfreetype so if there are any hackers with idle hands, please shout, and also anyone who is willing to test what's been done so far. The back-end is basically complete, if a bit crude, but there's a lot of GUI work still to do, for those who like that sort of work.. It's rewarding but meticulous. Ideally, a (GTK+?) based GUI would be used so that it can be ported to Windows, and the Mac.

Cheers,a

Edited by asbokid (Fri 30-Sep-11 00:16:46)

Standard User bhawkes
(newbie) Fri 30-Sep-11 07:25:13
Print Post

Re: Success! Telnet log..


[re: asbokid] [link to this post]
 
happy to help in testing. looking forward to a successful end result. keep up the good work
Standard User mr_bean
(member) Fri 30-Sep-11 10:15:21
Print Post

Re: Success! Telnet log..


[re: Croftie] [link to this post]
 
If I have interpreted the graphs right, on the bit loading there is some loss which is mainly around the adsl frequencies. that's increaded crosstalk isn't it?
If you mean the V shaped part of the graph with the bottom of the "V" around bin 250 then this is due to the "Spectral Power Management" feature of FTTC.

Basically the power output of frequencies also used by ADSL is reduced so that the output of the VDSL modem in the cabinet is about the same as the ADSL signal at the cabinet (which has travelled from the exchange and has therefore been attenuated).

It's to stop the VDSL signal swamping the ADSL signals in the same cable bundles with crosstalk.
Standard User nelix01
(committed) Fri 30-Sep-11 10:56:54
Print Post

Re: Success! Telnet log..


[re: Little_bird] [link to this post]
 
Hi Little_Bird,

I would like to know how you have this set upsmile

Standard User bhawkes
(newbie) Fri 30-Sep-11 13:06:10
Print Post

Re: Success! Telnet log..


[re: Croftie] [link to this post]
 
for comparison, my stats after 1 week up time:-

[IMG]http://i1119.photobucket.com/albums/k631/44_bh/OR_30...[/IMG]

[IMG]http://i1119.photobucket.com/albums/k631/44_bh/line_...[/IMG]

significant (?) CRC errors, certainly in comparison to yours!
Standard User burakkucat
(member) Fri 30-Sep-11 19:12:51
Print Post

Re: Success! Telnet log..


[re: mr_bean] [link to this post]
 
If you mean the V shaped part of the graph with the bottom of the "V" around bin 250 then this is due to the "Spectral Power Management" feature of FTTC.
Ah, interesting.

Looking at bhawkes' graphs, the notch is centred at about bin 500 so this clearly shows the dynamic process in action.

-----------------------------------------------------

100% Linux and, previously, Unix.

Edited by burakkucat (Fri 30-Sep-11 19:15:15)

Standard User Little_bird
(newbie) Fri 30-Sep-11 19:30:48
Print Post

Re: Success! Telnet log..


[re: nelix01] [link to this post]
 
Hi,

I am using a Netgear WNR1000 router with the HG612 modem.
These are my NIC & Router settings:-

Router & Modem settings

I have an ethernet cable plugged into LAN 4 of the router (don't know if if actually matters which one) & LAN 2 of the modem.

I don't recall changing any settings in the router.

Let me know if it works & we could then ask asbokid to add it to the his instructions.


Pauline.
Standard User bhawkes
(newbie) Fri 30-Sep-11 22:55:11
Print Post

Re: Success! Telnet log..


[re: Little_bird] [link to this post]
 
I'm using a Linksys WRT610n with the OR and have LAN2 of the OR into LAN 4 of the router, and as Pauline says no changes required to the router settings.
Standard User Croftie
(regular) Fri 30-Sep-11 23:32:15
Print Post

Re: Success! Telnet log..


[re: mr_bean] [link to this post]
 
No I don't mean that but that's still good to know. Thanks.

I'm talking about the lack of red on the bit loading graph compared to the one taken before the reconnect. Most of it is around tone 1000 which I believe to be where the adsl frequencies are but I could be wrong.
Standard User Croftie
(regular) Fri 30-Sep-11 23:39:04
Print Post

Re: Success! Telnet log..


[re: bhawkes] [link to this post]
 
I had lots of errors too before the modem re synced, with no performance change, you can see the stats in a previous post in this thread.

It's not the amount of errors I'm highlighting in the post you replied too, it's the amount of errors I got in a short space of time, it was a lot more than I got previously over several days.

It seems your connection is able to keep sync despite lots of errors, where my line is quick to wet itself very quickly with a small burst of them.
Standard User Croftie
(regular) Fri 30-Sep-11 23:47:25
Print Post

Re: Success! Telnet log..


[re: Little_bird] [link to this post]
 
In reply to a post by Little_bird:
You may wish to include a very small section that describes how you can have the usual router's ethernet connection plugged into LAN1 & another cable from a spare router port plugged into LAN2 so that internet browsing/emailing can continue at the same time as moving around in the modem's web pages.

That's a good idea and also how I have mine setup. I have wondered if there is a setting on the modem to enable access over the LAN1 port though, because if OR remote in they can see there is a cable connected to the LAN2 port on Status->LAN->Ethernet. Not sure what their reaction would be and whether it would be safer to not have LAN2 connected 24/7?
Standard User Croftie
(regular) Fri 30-Sep-11 23:52:50
Print Post

Re: Success! Telnet log..


[re: Croftie] [link to this post]
 
Just looking at the output of xdslcmd info --pbParams, untill recently the value of Retrain Reason has been 0, now it's 2.

Retrain Reason: 2

Anyone know what the different values stand for?
Standard User Al1264
(newbie) Sat 01-Oct-11 01:48:05
Print Post

Re: Success! Telnet log..


[re: Croftie] [link to this post]
 
Since LAN1 has to be configured as a bridge connection (to provide the necessary connection to the internet) my assumption is that you must use LAN2 to access the HG612 web interface or telenet. I'm leaving LAN2 connected, I don't expect any problems from BT.
Standard User nelix01
(committed) Sat 01-Oct-11 08:26:54
Print Post

Re: Success! Telnet log..


[re: Croftie] [link to this post]
 
I'm using a Hub3 with the OR Modem and cant get it working. If anyone with a Hub3 has managed this, I would appreciate some advice on how it is set up.

Edited by nelix01 (Sat 01-Oct-11 08:27:18)

Standard User Al1264
(newbie) Sat 01-Oct-11 09:02:49
Print Post

Re: Success! Telnet log..


[re: nelix01] [link to this post]
 
I don't have a HH3 but the first thing I'd check would be the IP address and subnet for the hub, if it doesn't use 192.168.1.x then you'd likely have to change either the HH3 to 192.168.1.x or the OR modem to something in the range valid for the HH3 (make sure it doesn't conflict with other addresses on your network).
Standard User mr_bean
(member) Sat 01-Oct-11 16:19:06
Print Post

Re: Success! Telnet log..


[re: Croftie] [link to this post]
 
Most of it is around tone 1000 which I believe to be where the adsl frequencies are but I could be wrong.
Tone 1000 is in the middle of the upstream band and, at 4.3125MHz, well above the frequencies used by ADSL
Standard User Croftie
(regular) Sat 01-Oct-11 17:41:26
Print Post

Re: Success! Telnet log..


[re: Al1264] [link to this post]
 
Wish I had a spare modem to tinker with, not brave enough to mess with this one. There look to be a few potential options.
Standard User Croftie
(regular) Sat 01-Oct-11 18:05:35
Print Post

Re: Success! Telnet log..


[re: mr_bean] [link to this post]
 
I'm confused now, would someone like to write a short idiots guide to the graphs?

The hub rebooted itself at 11AM today, IP Profile has risen to 36288, modem and stats haven't changed from yesterday. Now got 35.5Mbps throughput, 1Mbps lower than last time it was this high but maybe it will be able to hold this time. I can post todays graph if you want to see it.
Standard User Croftie
(regular) Sat 01-Oct-11 18:06:19
Print Post

Re: Success! Telnet log..


[re: nelix01] [link to this post]
 
Just to add to what Al said. The cable setup is as before you flashed the modem only with an extra ethernet cable from LAN2 to a spare port on the router. With a HH2 I didn't need to do and config changes, I did unplug the LAN2 cable once and after pluging it back in I couldn't access the modem straight away, I had to wait a bit.
Standard User lockyatlrg
(fountain of knowledge) Sat 01-Oct-11 21:38:39
Print Post

Re: Success! Telnet log..


[re: Croftie] [link to this post]
 
Well with my short new line im seeing MASSIVE drops in speed, last night was fine, come today

MY attainable rate has dropped from 48mb to 42 and my sync has dropped from a perfect 39999 for the past 5 months to 36, ping his doubled, my throughput has gone from a perfect 38 to 34.

NOT happy is an understatement, BT infinity = another [censored] DSL service, with investing billions you really think they would use a better service than the unreliable DSL service.

to be honest, I can't really see my speed coming back.

CRC=0 over a week sync

FEC= under 100 over a week sync

HEC = 0 over a week sync


Only reason this has happened IMO is someone was enabled today on my cab and the crosstalk has become to much. this is on a 350 meter line with 0.5cu copper.

How much more is this going to drop, Well I have told bt my modem is faulty and they are sending an techy out, I'm hopping he can help things and get my line profile reset.

BT Infinity
ROUTER:-Netgear WNDR37AV
Sync 40000D 10000U

Edited by lockyatlrg (Sat 01-Oct-11 21:39:09)

Standard User nelix01
(committed) Sat 01-Oct-11 21:54:59
Print Post

Re: Success! Telnet log..


[re: Croftie] [link to this post]
 
Think I might have been over complicating things. I thought I had to change my NIC and router settings but in reality all I had to do was plug in another Ethernet cable from a spare port on the Hub3 to LAN2 on the OR Modem. Works perfectly.

Standard User lockyatlrg
(fountain of knowledge) Sun 02-Oct-11 17:59:42
Print Post

Re: Success! Telnet log..


[re: lockyatlrg] [link to this post]
 
Come today and my line is at 25mbit down 15 in 2 days.

BT Infinity
ROUTER:-Netgear WNDR37AV
Sync 40000D 10000U
Standard User lockyatlrg
(fountain of knowledge) Mon 03-Oct-11 09:31:50
Print Post

Re: Success! Telnet log..


[re: lockyatlrg] [link to this post]
 
BT came out today and fixed the line, back up to speed and got some stats from the JDSU

he said someone has been fiddling in the cab and messed my line up.

BT Infinity
ROUTER:-Netgear WNDR37AV
Sync 39999D 9995U
Attenuation: 9.6 SNR: 8.9
Line Length 300meters
Standard User bhawkes
(newbie) Mon 03-Oct-11 12:57:15
Print Post

Re: Success! Telnet log..


[re: lockyatlrg] [link to this post]
 
ongoing stats:-

[IMG]http://i1119.photobucket.com/albums/k631/44_bh/OR_03...[/IMG]

[IMG]http://i1119.photobucket.com/albums/k631/44_bh/line_...[/IMG]

# /bin/xdslcmd info --pbParams
/bin/xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Max: Upstream rate = 17598 Kbps, Downstream rate = 47380 Kbps
Path: 0, Upstream rate = 9999 Kbps, Downstream rate = 39999 Kbps

Discovery Phase (Initial) Band Plan
US: (0,95) (696,1183)
DS: (32,687) (1192,1627)

Medley Phase (Final) Band Plan
US: (0,95) (696,1183)
DS: (32,687) (1192,1627)

VDSL Port Details Upstream Downstream

Attainable Net Data Rate: 17598 kbps 47380 kbps
Actual Aggregate Tx Power: - 18.1 dBm 5.4 dBm

=========================================================================

VDSL Band Status U0 U1 U2 U3 D1 D2 D3
Line Attenuation(dB): 3.4 14.1 N/A N/A 7.8 17.7 N/A
Signal Attenuation(dB): 0.0 13.3 N/A N/A 7.8 17.7 N/A
SNR Margin(dB): 17.1 17.1 N/A N/A 11.0 11.0 N/A
TX Power(dBm): -29.1 -18.4 N/A N/A 1.8 2.9 N/A

#
Standard User burakkucat
(committed) Mon 03-Oct-11 13:57:26
Print Post

Re: Success! Telnet log..


[re: lockyatlrg] [link to this post]
 
Sync 39999D 9995U
Attenuation: 9.6 SNR: 8.9
Line Length 300meters
The origin of your sync speed and attenuation values are obvious but would you clarify that of the line length, please?

Were you told that value by an OR engineer? Did he measure it electronically with his JDSU or read it from the hardware infrastructure database, via his laptop? Or is it your own estimation?

A reliable set of those three metrics will be of use by others whose connections are behaving in a sub-optimal way.

-----------------------------------------------------

100% Linux and, previously, Unix.
Standard User lockyatlrg
(fountain of knowledge) Mon 03-Oct-11 14:05:08
Print Post

Re: Success! Telnet log..


[re: burakkucat] [link to this post]
 
I asked what length my D-side was he did a test on his jdsu and told me it was 300 meters, I seen the figure my self
the attenuation of 9.6 was the figure on his jdsu
The road where I think my line takes its just over 300 meters too.

these are my stats a few weeks back I would need to plug my laptop in for fresh stats

Max: Upstream rate = 17307 Kbps, Downstream rate = 48560 Kbps
Path: 0, Upstream rate = 9995 Kbps, Downstream rate = 39999 Kbps

Discovery Phase (Initial) Band Plan
US: (0,95) (696,1183)
DS: (32,687) (1192,1627)
Medley Phase (Final) Band Plan
US: (0,95) (696,1183)
DS: (32,687) (1192,1627)
VDSL Port Details Upstream Downstream
Attainable Net Data Rate: 17307 kbps 48560 kbps
Actual Aggregate Tx Power: - 17.7 dBm 7.7 dBm
================================================== ==========================
VDSL Band Status U0 U1 U2 U3 D1 D2 D3
Line Attenuation(dB): 3.4 13.4 N/A N/A 7.8 16.6 N/A

Signal Attenuation(dB): 0.0 13.5 N/A N/A 7.8 16.6 N/A

SNR Margin(dB): 16.7 16.7 N/A N/A 8.5 8.5 N/A

TX Power(dBm): -28.3 -18.0 N/A N/A 6.1 2.6 N/A

BT Infinity
ROUTER:-Netgear WNDR37AV
Sync 39999D 9995U
Attenuation: 9.6 SNR: 8.9
Line Length 300meters

Edited by lockyatlrg (Mon 03-Oct-11 14:05:54)

Standard User burakkucat
(committed) Mon 03-Oct-11 14:13:49
Print Post

Re: Success! Telnet log..


[re: lockyatlrg] [link to this post]
 
Thank you for clarifying the origin of the line length.

Perhaps you might like to add to your signature block something like: "Data from OR engineer's JDSU." ?

-----------------------------------------------------

100% Linux and, previously, Unix.
Standard User asbokid
(regular) Mon 03-Oct-11 14:29:53
Print Post

Re: Success! Telnet log..


[re: lockyatlrg] [link to this post]
 
Hi Lockyatlrg..

Glad you got it sorted. and interesting to hear about your loop length.

The JDSU and similar devices can apparently estimate length using two different methods..

1) using time domain reflectometry (TDR). TDR is known in other fields such as RADAR as pulse echo sounding. It involves the injection of a shaped pulse into the end of a loop which is terminated at the other end. The time delay before the pulse echo returns to the JDSU is measured, halved, and multiplied by the velocity factor of the cable. From this calculation, loop length can be calculated very accurately. For lengths up to 1000 metres, an astonishing accuracy of +/- 0.4% can be achieved (according to manufacturer HST).

2) by measuring magnitude responses in the frequency domain, and correlating them with empirical data for the (likely) physical characteristics of the cable(s) between your NTE and the DSLAM.

From what I understand, method 1) requires a trip to the cabinet or exchange to install an appropriate termination on the loop pair before the TDR test can be performed. This termination is required to reflect the signal back so that it can be measured at the JDSU..

Probably the less accurate method 2) is used whenever possible, to reduce wear on the shoe soles.

Also, bhawkes kindly offered to test a VDSL port of DMT. I would like to take you up on that, please. Do you run Linux, as I haven't yet looked at porting the tool back to Windows, but do plan to do so, unless someone else would like to do that....

Also it would be nice to develop a more accurate algorithm for loop length estimation using the plentiful line characteristics data from the Huawei HG612. Loop length estimation is a feature in DMT, so an updated algorithm using method 2) should just slot in.

Edited by asbokid (Mon 03-Oct-11 14:37:41)

Standard User lockyatlrg
(fountain of knowledge) Mon 03-Oct-11 14:54:19
Print Post

Re: Success! Telnet log..


[re: burakkucat] [link to this post]
 
Yes already done.

He did not visit the cab to perform the loop length test.

So what is the +/- tolerance on the JDSU standalone test

There is 2 ways for my line to get to my house one is 350meters by road and other is about 300 meters ish.

My cab is getting very highly populated now with VDSL connections, which is why my SNR has slipped from 12db down to 8.9 and attainable rate has dropped.

BT Infinity
ROUTER:-Netgear WNDR37AV
JDSU Stats
Sync 39999D 9995U
Attenuation: 9.6 SNR: 8.9
Line Length 300meters
Standard User bhawkes
(newbie) Mon 03-Oct-11 14:54:50
Print Post

Re: Success! Telnet log..


[re: asbokid] [link to this post]
 
I run both Win7 (64 bit) and Ubuntu 11.04. Let me know what I can do to help.
Standard User asbokid
(regular) Mon 03-Oct-11 15:49:15
Print Post

Re: Success! Telnet log..


[re: bhawkes] [link to this post]
 
In reply to a post by bhawkes:
I run both Win7 (64 bit) and Ubuntu 11.04. Let me know what I can do to help.

Hi BHawkes,

Thank you! That would be great.. Glad to hear that you're a Ubuntu-er as well smile
I will email you a tarball when it's in a fit state.

If anyone can think of any new features to add, please say.. The DMT-UX open source codebase [1] is old now, so probably the more recent (closed source) DMT for Windows has been updated a lot since then.[2]

cheers, a

[1] http://www.spida.net/projects/software/dmt-ux/index....
[2] http://translate.google.com/translate?u=http://dmt.m...
Standard User bhawkes
(newbie) Mon 03-Oct-11 16:00:09
Print Post

Re: Success! Telnet log..


[re: asbokid] [link to this post]
 
No rush! I'm away for a few days (Tue-Sat).
Standard User Little_bird
(newbie) Tue 11-Oct-11 12:20:48
Print Post

Re: How do my stats look?


[re: WWWombat] [link to this post]
 
In reply to a post by WWWombat:
I've been meaning to get around to playing with this... and SWMBO is away at the weekend, so I might get a chance!

Are the plotting scripts available anywhere? If so, I'll try doing my own plotting.

In the meantime, I wanted to point this out...


I noticed the difference between the 2 graphs as being the location of the "gash" (although I'm not sure everyone has the same idea of which bit is being called the gash!): Orly's gash (or dip) appears to end around tone 250, in the SNR graph (ie top graph), while griff_90's gash appears to finish around tone 500 in the same graph (but second down in their image).

I suspect this is indeed caused by the spectral power mask applied at the cabinet - and that the 2 cabinets have different masks.

The document linked above: BT's VDSL Primer from 2009, shows the masks BT intended using at the time. See pages 31 and 32 (of 66).

The masks may put the top of the gash at 600kHz (for cabinets far from the exchange), up to around 2MHz for those closest the exchange.

So... I bet that Orly's cabinet is further from the exchange than griff_90's.

However... I'm not convinced that this document represents the actual deployment at Openreach today. Some of the screen-grabs here show that BT are using US0 (25kHz - 138kHz) which isn't shown in the band-plan 997 in that document, and the spectral mask makes no allowance for it either. I suspect there are some differences in reality...

On a separate note: this mask is a way in which the E-side distance can still affect the bandwidth you see as a customer; the overall behaviour of VDSL2 isn't *just* dependent on the D-side distance.


Hi WWWombat,

Would you be able to expand a little on your comment regarding the E-side affecting the bandwidth?

I have been experiencing some low FTTC speed issues & would like to understand where the issues could be, especially as visiting engineers claim my connection is operating as intended.

My download speeds have been a minimum of 10Mb or so down since the first month's excellent speeds.

Pauline.

Edited by Little_bird (Tue 11-Oct-11 12:27:23)

Anonymous
(Unregistered)Wed 12-Oct-11 13:17:01
Print Post

Re: Success! Telnet log..


[re: asbokid] [link to this post]
 
A TDR is does not require the pair to be looped. It will measure straight opens / disconnections and also loops (as in shorts / fault).
The only time a loop is required is when testing for resistance to ground . insulation issues etc (bridge testing).
Standard User burakkucat
(committed) Thu 13-Oct-11 03:16:28
Print Post

Re: Success! Telnet log..


[re: Anonymous] [link to this post]
 
In reply to a post by Anonymous:
A TDR is does not require the pair to be looped. It will measure straight opens / disconnections and also loops (as in shorts / fault).
The only time a loop is required is when testing for resistance to ground . insulation issues etc (bridge testing).
Yes, agreed Anonymous. I thought I had previously mentioned that to Asbokid in one of my prior PMs. Perhaps he's a little bit forgetful . . . rather like myself. wink

Anyhow it's worthwhile (re)stating, to make the point clear for anyone else who reads through all the postings of this thread. smile

-----------------------------------------------------

100% Linux and, previously, Unix.

Edited by burakkucat (Thu 13-Oct-11 03:19:54)

Standard User burakkucat
(committed) Thu 13-Oct-11 03:45:57
Print Post

Linux Graphing Script, Version 2.0


[re: burakkucat] [link to this post]
 
Just a quick note to mention that Asbokid has now uploaded a revised version (2.0) of the Linux graphing script (graph.sh) to his Google Docs page [1].

Little_bird (a.k.a. Pauline) contacted me earlier to say that she is now converting the Linux script to a batch file, suitable for use in a Windows environment.

[1] https://docs.google.com/leaf?id=0B6wW18mYskvBNDI2YmQ...

-----------------------------------------------------

100% Linux and, previously, Unix.

Edited by burakkucat (Thu 13-Oct-11 03:48:34)

Standard User Little_bird
(newbie) Thu 13-Oct-11 18:07:17
Print Post

Re: Linux Graphing Script, Version 2.0


[re: burakkucat] [link to this post]
 
In reply to a post by burakkucat:
Little_bird (a.k.a. Pauline) contacted me earlier to say that she is now converting the Linux script to a batch file, suitable for use in a Windows environment.


I am indeed attempting to convert burakkucat's excellent Linux script to a native Windows batch file.

However, I am slightly hampered by the facts that:-

a) there appear to be some fundamental operating system differences to overcome. &
b) I am a novice at this & don't really know what I am doing smile

I do have a working Windows batch file, but it does still require some further refinement & testing.


Pauline.
Standard User asbokid
(regular) Thu 20-Oct-11 20:24:19
Print Post

Re: Success! Telnet log..


[re: burakkucat] [link to this post]
 
Thanks for the correction, guys.

Hypothetically, with no need to open the cabinet, does this means that TDR tests could be performed by an end-user with the appropriate equipment, e.g. a "mole" or a "hawk" ?
Standard User burakkucat
(committed) Fri 21-Oct-11 00:14:15
Print Post

Re: Success! Telnet log..


[re: asbokid] [link to this post]
 
In reply to a post by asbokid:
Hypothetically, with no need to open the cabinet, does this means that TDR tests could be performed by an end-user with the appropriate equipment, e.g. a "mole" or a "hawk" ?
I suppose it could be done . . . But perhaps a suitably qualified person ( laugh ) would care to comment? Maybe Zarjaz could add a few "wise words"?

-----------------------------------------------------

100% Linux and, previously, Unix.
Standard User bhawkes
(newbie) Sun 23-Oct-11 15:34:04
Print Post

Re: vDMT


[re: asbokid] [link to this post]
 
First tentative use of linux version of DMT as modified by asbokid for OR modem:-


http://i1119.photobucket.com/albums/k631/44_bh/23Oct...
Standard User nelix01
(committed) Wed 26-Oct-11 17:28:24
Print Post

Re: vDMT


[re: bhawkes] [link to this post]
 
Just seen some interesting stats when logging into the OR Modem:

Line Status
Help
Downstream Upstream
Attainable rate (kbit/s) 92960 31091
SNR margin (dB) 21.3 22.5
Line attenuation (dB) 0 0
Output power (dBmV) 13.8 -6.3

So checked via putty and seen:


# xdslcmd info --show
xdslcmd info --show
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 2
Max: Upstream rate = 31048 Kbps, Downstream rate = 92960 Kbps
Path: 0, Upstream rate = 10000 Kbps, Downstream rate = 39998 Kbps

Link Power State: L0
Mode: VDSL2 Annex B
VDSL2 Profile: Profile 17a
TPS-TC: PTM Mode
Trellis: U:ON /D:ON

Standard User lockyatlrg
(fountain of knowledge) Wed 26-Oct-11 18:55:10
Print Post

Re: vDMT


[re: nelix01] [link to this post]
 
Very nice stats that, should see 80/20 sync very easy from that when they enable it.

BT Infinity
ROUTER:-Netgear WNDR37AV
JDSU Stats
Sync 39999D 9995U
Attenuation: 9.6 SNR: 11.4
Line Length 300meters
Standard User epyon
(member) Wed 26-Oct-11 20:59:02
Print Post

Re: vDMT


[re: nelix01] [link to this post]
 
awesome.

BE*Unlimited15713/1321Kbps
My Broadband Speed Test
Standard User lockyatlrg
(fountain of knowledge) Wed 26-Oct-11 21:39:38
Print Post

Re: vDMT


[re: nelix01] [link to this post]
 
I just looked at your stats previous and mine are ni on the same, so im hoping for the same result with 17a.

BT Infinity
ROUTER:-Netgear WNDR37AV
JDSU Stats
Sync 39999D 9995U
Attenuation: 9.6 SNR: 11.4
Line Length 300meters
Standard User nelix01
(committed) Wed 26-Oct-11 22:08:21
Print Post

Re: vDMT


[re: lockyatlrg] [link to this post]
 
I am hoping to get on the trials for the new speeds early in the new yearsmile

Standard User lockyatlrg
(fountain of knowledge) Wed 26-Oct-11 22:30:50
Print Post

Re: vDMT


[re: nelix01] [link to this post]
 
trials?

who what why when how?

BT Infinity
ROUTER:-Netgear WNDR37AV
JDSU Stats
Sync 39999D 9995U
Attenuation: 9.6 SNR: 11.4
Line Length 300meters
Standard User nelix01
(committed) Wed 26-Oct-11 22:36:40
Print Post

Re: vDMT


[re: lockyatlrg] [link to this post]
 
I work for a Telco and have my name down for the internal trial when it starts.

Standard User TheHorseman
(knowledge is power) Wed 26-Oct-11 22:56:31
Print Post

Re: vDMT


[re: lockyatlrg] [link to this post]
 
Your stats are slightly better than mine, the engineer estimated that my line length was around 300 meters. He did not have a JDSU with him so I do not know what the line atten is. I am still on profile 8c here.

BT -> Zen -> F2S -> Bulldog -> Be* -> BT Infinity
Far too many computers, 1 Wife, 3 Maine Coons and too many horses smile
Standard User Croftie
(member) Wed 26-Oct-11 23:30:37
Print Post

Re: vDMT


[re: nelix01] [link to this post]
 
Very nice stats, are you quite close to the exchange and what phase was your exchange in? Trying to see if there is a relationship between rollout phase and the bandplan change.
Standard User epyon
(member) Thu 27-Oct-11 02:56:15
Print Post

Re: vDMT


[re: TheHorseman] [link to this post]
 
Hmmm

Your cabinet is planned to have WBC FTTC by 31st March 2012 Our test also indicates that your line currently supports a fibre technology with an estimated WBC FTTC Broadband where consumers have received downstream line speed between 33.9 to 39.5 Mbps and upstream line speed between 12.1 to 14.1 Mbps.

I think i should get the full 80/20

Though a bt guy said to me when get was replacing my ms that my line could probably support 100mbps + since im that close to the cab.

BE*Unlimited15713/1321Kbps
My Broadband Speed Test
Standard User nelix01
(committed) Thu 27-Oct-11 10:35:15
Print Post

Re: vDMT


[re: Croftie] [link to this post]
 
Croftie,

I am about 100m from the Fibre CAB and my exchange was enabled in April 2011 as part of the BT/DETI contact in Northern Ireland. Not sure of any links in the roll out of the profile.

Standard User Croftie
(member) Fri 28-Oct-11 03:05:21
Print Post

Re: vDMT


[re: nelix01] [link to this post]
 
Thanks, Oh your in NI, that's sort of a special case so probably not a good indicator.

I wasn't mistaken when I asked for your distance to exchange btw. Your output power is quite high considering your short D-Side and I'm wondering whether that is because of the 17a profile or you not being far from the exchange.
Standard User nelix01
(committed) Fri 28-Oct-11 07:27:44
Print Post

Re: vDMT


[re: Croftie] [link to this post]
 
I'm actually 8.3km from the exchange.

Standard User Croftie
(member) Fri 28-Oct-11 16:24:41
Print Post

Re: vDMT


[re: nelix01] [link to this post]
 
Right ok thanks.
Standard User lockyatlrg
(fountain of knowledge) Fri 28-Oct-11 17:55:14
Print Post

Re: vDMT


[re: Croftie] [link to this post]
 
at the distance from the exchange I would say your cab is using a different mask to people closer to the exchange.

BT Infinity
ROUTER:-Netgear WNDR37AV
JDSU Stats
Sync 39999D 9995U
Attenuation: 9.6 SNR: 11.4
Line Length 300meters
Standard User Croftie
(member) Mon 31-Oct-11 01:34:56
Print Post

Re: vDMT


[re: lockyatlrg] [link to this post]
 
Yes but nelix is further from the exchange than me, yet has higher power output.

My d-side is longer so I'm thinking the power output reported by the modem doesn't include the e-side.
Standard User burakkucat
(committed) Mon 31-Oct-11 02:01:39
Print Post

Re: vDMT


[re: Croftie] [link to this post]
 
My d-side is longer so I'm thinking the power output reported by the modem doesn't include the e-side.
Correct. The modem (the active CPE) and the DSLAM (in the FTTC) are the two devices at either ends of your VDSL2 link.

-----------------------------------------------------

100% Linux and, previously, Unix.
Standard User planetf1
(experienced) Mon 31-Oct-11 22:29:37
Print Post

Re: vDMT


[re: burakkucat] [link to this post]
 
Ok, here's my stats. Supposedly my line is around 470m 0.5mm Cu. I can see I'm on the new profile and getting max sync on the current service -- previously my throughput was "only" 34-35 Mbps instead of now peaking around 38.

When the BT engineer installed my line in January he suggested I'd get 70 Mbps in the future (he had worked on these trials for a few years and new his vdsl stuff) so that's not far off what the modem reckons assuming current snr targets.. and of course it could go down with crosstalk frown

# xdslcmd info --show
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Max: Upstream rate = 24622 Kbps, Downstream rate = 67492 Kbps
Path: 0, Upstream rate = 10000 Kbps, Downstream rate = 39998 Kbps

Link Power State: L0
Mode: VDSL2 Annex B
VDSL2 Profile: Profile 17a
TPS-TC: PTM Mode
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 14.1 22.3
Attn(dB): 0.0 0.0
Pwr(dBm): 13.8 6.9
Standard User Croftie
(member) Mon 31-Oct-11 23:00:47
Print Post

Re: vDMT


[re: burakkucat] [link to this post]
 
Thanks burakkucat, I initially thought there was a single power level between exchange-DSLAM-CPE.
Standard User burakkucat
(committed) Tue 01-Nov-11 01:58:47
Print Post

Re: vDMT


[re: Croftie] [link to this post]
 
You're welcome. smile

So, to recap, the only thing that uses the E-side copper is your analogue voice service (POTS / PSTN).

-----------------------------------------------------

100% Linux and, previously, Unix.
Standard User Croftie
(member) Tue 01-Nov-11 21:08:28
Print Post

Re: vDMT


[re: burakkucat] [link to this post]
 
Indeed, there is a power level on the fibre E-Side aswell isn't there?
Standard User burakkucat
(committed) Tue 01-Nov-11 22:33:47
Print Post

Re: vDMT


[re: Croftie] [link to this post]
 
Er, I see there is a little confusion. wink

When talking about the E-side and the D-side, we are just referring to the copper (or aluminium) cabling to the exchange or to the customers premise from the PCP.

In your case, a FTTC user, there is just 50V DC with the analogue voice signal superimposed upon it that traverses the E-side cable. On the D-side cable, from the PCP to your SSFP, there are three components -- 50V DC, the analogue voice signal and the VDSL2 signal (at radio frequencies).

The VDSL2 power level between the FTTC DSLAM and the active CPE (the Huawei HG612), through the D-side copper (or aluminium) link, has already been mentioned.

You are correct that there is another pair (Tx / Rx) of power levels to be considered. However this is not through the E-side cable but is through the fibre optic feed to/from the FTTC DSLAM from/to its source -- which may not necessarily be the same exchange building to which the E-side cables are connected!

-----------------------------------------------------

100% Linux and, previously, Unix.
Standard User Croftie
(member) Wed 02-Nov-11 17:36:04
Print Post

Re: vDMT


[re: burakkucat] [link to this post]
 
In reply to a post by burakkucat:
You are correct that there is another pair (Tx / Rx) of power levels to be considered.

Thanks.

In reply to a post by burakkucat:
However this is not through the E-side cable but is through the fibre optic feed

I know that's why I said "fibre E-Side" wink Fair enough though it's not refered to as E-side because it's fibre. Everything else is already clear but i appreciate the effort to elaborate all the same.
Standard User lockyatlrg
(fountain of knowledge) Wed 02-Nov-11 19:50:50
Print Post

Re: vDMT


[re: burakkucat] [link to this post]
 
I:m on Swadlincote exchange and my fibre does not go to my local exchange, there is 2 main splines that go to Nottingham and Leicester exchange.

BT Infinity
ROUTER:-Netgear WNDR37AV
JDSU Stats
Sync 39999D 9995U
Attenuation: 9.6 SNR: 11.4
Line Length 300meters
Standard User Daniel_g
(newbie) Thu 03-Nov-11 07:58:20
Print Post

Re: More FTTC line stats


[re: mr_bean] [link to this post]
 
Hello

Read this post last night and had a quick look at what I had to do to get to the good stuff on the modem. Thought ok easy enough after getting it out and off the wall in the cupboard.

Got the firmware and instructions off the link you have and now thismorning did it and all worked after working out how to get telnet in windows 7, had to be activated and then works at CMD box on run. Did the network card as the address given after much messing around. flashed the bos and good stuff on its web pages but can not do the telnet thing. copy what is on the PDF instructions and everything is not working and not a command or something!. Does not work anyway.
Like going back to 1989 at college with dos stuff, one mistake and no working. Glad windows for idiots came along.

anyone know what to type into the start of a telnet box to do what instructions suggest. Would be nice to do the lot and somewhere see the profile. was that here or somewhere else, might be mixing up postings.

Can do the white modem web page thing that is nice but the telnet thing to play with and these graphs even better.

Not that high up on computers so no hard instructions please.

Thank you.

Was not happy with the falling speed and got a new 2B modem in the week, after reset did go up 9Mb to 30 on speedtests. modem suggests max of 36 that it did do in may so now not happy!.

Up of 15 and only on 2Mb anyway as cheap option on BT.
Standard User cmn
(member) Thu 03-Nov-11 12:58:52
Print Post

Re: More FTTC line stats


[re: Daniel_g] [link to this post]
 
Disable the firewall under Advanced -> Firewall.

Edited by cmn (Thu 03-Nov-11 12:59:13)

Standard User orly
(fountain of knowledge) Thu 03-Nov-11 14:26:00
Print Post

Re: More FTTC line stats


[re: Daniel_g] [link to this post]
 
If you have a particular version of the modem (SP06) then I don't believe Telnet works.

You need to use SSH via a program like Putty.

---
> Comparison chart of FTTC ISPs
> Got FTTC? Complete the survey

BT Infinity 8th July 2010
(NIBA)
600m (approx) to cabinet
29.5Mbit down / 5.5Mbit up
Standard User Daniel_g
(newbie) Thu 03-Nov-11 18:32:24
Print Post

Re: More FTTC line stats


[re: orly] [link to this post]
 
Hello

I think it is the new one a 2B as only got this week as moaning it was slower than it was, looks like the guys replace the rubbish (polite way of waying) modems anyway even if that is not the cause of the customer moaning. Mine could have been wrong as a new one and a reset pushed it back up to 30.

did the turn off the firewall thing and works. Did the things on the instructions at the start of this post. So all good. Nice but don't see the point of the telnet thing, says the same as the moden generated web pages as far as I can make out. nice to try so say I can do this, just having the web pages out the thing is ok for me as now can see and play with settings if I wish.
Standard User Daniel_g
(newbie) Thu 03-Nov-11 18:37:31
Print Post

Re: More FTTC line stats


[re: cmn] [link to this post]
 
Hello

Nice one, did that but could not get the comands right, like going back to dos days this telnet. Used the ?/hepl hints and could see I need open 192.168.1.1

Then all good and could do what was mentioned in the instructions.

For the interest tried with the firewall back at standard (as it was when I found) and still works so was me not typing the correct thing in.

Computer 1 me 0 frown idiot!.

To be honest did not really see the point of telnet, says the same as the modem web pages but can now do it so happy I did, but a bit pointless I thought as not really sure how to get to all the stuff, just follwing a few commands on the instructions.

Nice I can so good stuff!.
Standard User reddev86
(regular) Thu 03-Nov-11 23:02:13
Print Post

Re: More FTTC line stats


[re: Daniel_g] [link to this post]
 
Interesting about the change over to the 17a profile.

I wonder if this is being done in stages, or if everyone has already been changed over.

I haven't got round to unlocking my modem yet so I can't check - too busy with work. My line profile hasn't changed in about 6 months, so i'm guessing im still on 8c, but can't check to be sure until i unlock the modem.

I sync right now at around 35meg, line profile is 33846k, anyone with similar stats see a speed increase when they changed to 17a?

Although im only 500-550m away from the cabinet, my line is aluminium so I am not expecting miracles when the upgrade happens.

FTTC via Plusnet
33mbit down 2mbit up
NILN exchange - 550m from cabinet
Netgear WNR1000
Standard User Daniel_g
(newbie) Fri 04-Nov-11 07:26:39
Print Post

Re: More FTTC line stats


[re: reddev86] [link to this post]
 
Hello

Not sure I have just had a old modem that was on it's way out I think so slowing down. Got the bloke in saturday and got a newer version and now faster than it was but not like may when first fitted and went at 36Mb on speed tests, now on 30 on a good day, better than 21 or so before saturday. Wait and see what I get when it changes. Nice to get into the modem so worth doing what the link says on the first thing on this post. Don't see the point of the telnet thing but the modem web pages are good. Read you plug the LAN2 output into the router hole 1 to 4 , a spare one and so can do the stuff on the web browser, was having to move comuter to modem until I did this. is 192.168.1.1, says on the instruction PDF file. Easy enough.
Standard User nelix01
(committed) Fri 04-Nov-11 10:18:18
Print Post

Re: More FTTC line stats


[re: reddev86] [link to this post]
 
The profile is being rolled out and should be completed by the end of this year. This will them allow Openreach / BT Wholesale and ISP to start testing and trials for full launch in early 2012.

Standard User TheHorseman
(knowledge is power) Fri 04-Nov-11 12:51:02
Print Post

Re: More FTTC line stats


[re: Daniel_g] [link to this post]
 
I also have my Modem Lan2 port plugged in to an adjacent switch (Router ports all in use). I did however change the Modems Lan2 port IP to 192.168.1.1 as my router is 192.168.1.1

BT -> Zen -> F2S -> Bulldog -> Be* -> BT Infinity
Far too many computers, 1 Wife, 3 Maine Coons and too many horses smile
Standard User Daniel_g
(newbie) Fri 04-Nov-11 14:24:56
Print Post

Re: More FTTC line stats


[re: TheHorseman] [link to this post]
 
Nice one, has it's use I guess. Not sure what my routers are on but must be something different.

No more messing around doing BT speedtests to get the information.

the modem is on 192.168.1.1 and your router as well, must work I guess or did I understand wrong,

Nice to see what happens when it is speeded up, will get more than the 30mbs I hope as it did do more in summer but slowed up and now stuck at 7 less than it once did. see what next year brings when upto 80.

Only 400m line as the blokes box of tricks said when testing the line last saturday
Standard User TheHorseman
(knowledge is power) Fri 04-Nov-11 14:38:53
Print Post

Re: More FTTC line stats


[re: Daniel_g] [link to this post]
 
In reply to a post by Daniel_g:
the modem is on 192.168.1.1 and your router as well, must work I guess or did I understand wrong,

No, that would not work, two devices on the same network cannot have the same IP. I changed the modems LAN IP to 192.168.1.2 (you can change it from the web interface).

BT -> Zen -> F2S -> Bulldog -> Be* -> BT Infinity
Far too many computers, 1 Wife, 3 Maine Coons and too many horses smile
Standard User asbokid
(regular) Fri 04-Nov-11 14:55:20
Print Post

Re: More FTTC line stats


[re: Daniel_g] [link to this post]
 
Hi Daniel,

The gradual drop in bandwidth that you have experienced could be due to crosstalk from other xDSL pairs that share the same cable bundle as yours.

The full line statistics output from the xdslcmd tool in the Huawei firmware (which you can only access through telnet or ssh) should indicate whether that is the case.

As more subscribers sign up to FTTC, the issues of crosstalk can only worsen. The noise-limiting factor from crosstalk is the single greatest weakness of xDSL, and the higher frequencies used in VDSL2 are particularly susceptible to inductance noise.

In his excellent MSc thesis on xDSL loop qualification [1], Matthias Ernelli discusses pair twisting used in a cable bundle and how it can mitigate the inter-pair electromagnetic coupling (crosstalk). Cable Twisting is a science in itself!

Yaakov Stein, the chief scientist at RAD Data Comms has published a very informative set of slides to accompany his short course of lectures "An Introduction to xDSL". The issue of crosstalk is illustrated very clearly. [2]

Cheers,
A

[1] http://www.ee.kth.se/php/modules/publications/report...

[2] http://www.dspcsp.com/lectures/
Standard User mikecrawford80
(regular) Fri 04-Nov-11 15:47:16
Print Post

Re: More FTTC line stats


[re: asbokid] [link to this post]
 
Put the unlocked SP10 firmware on to my 2B modem today, no issues encountered what so ever.

Changed IP from 192.168.1.1 to an address in my 192.168.0.0/24 subnet

Observations so far;

1. I'm on profile 17a
2. Turn off QoS makes no difference to download speed tests, upload showed a 150kbps improvement
3. My max download speed is less than what I was getting for the first 3 months I was connected (profile of 32mbps, speed tests at 30mbps), perhaps cross talk?
4. If Plusnet increase upload speed I'm in for a nice wee bump up
5. The length of my line tells me I'd be silly in future to pay for an 80/20 product as I would not see any difference (line length is 950 metres, all underground copper)


Output from xdslcmd info --show

xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Max: Upstream rate = 6010 Kbps, Downstream rate = 29024 Kbps
Path: 0, Upstream rate = 1999 Kbps, Downstream rate = 27399 Kbps

Link Power State: L0
Mode: VDSL2 Annex B
VDSL2 Profile: Profile 17a
TPS-TC: PTM Mode
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 6.8 14.9
Attn(dB): 0.0 0.0
Pwr(dBm): 12.4 -1.8


Plusnet Extra Fibre
September 2011 Speedtest ...
Standard User Daniel_g
(learned) Fri 04-Nov-11 17:07:31
Print Post

Re: More FTTC line stats


[re: asbokid] [link to this post]
 
Hello

All you stuff is good and did it ok after working out the telnet command of open before the modem address. Easy when worked out that took a bit of messing around.

nice to get into it.

Did have the guys come and repare the duff phone line that every now and then crackles when talking to someone. Next door garden patio lifted up to get to the buried junction box (clever then to hide under stuff, not), they did and still not happy so drop wire from grey box on the wall up to house in the roof wire was replaced. All ok now so guess it was that. Maybe not then and more people being added.

Was good when I had not 2 weeks of it starting up here and being turned on in Abingdon. One of the first I guess months ago, might get a bit more when it goes over to the better speed, will will see. Like the links, something to read later.

Thank you.
from Daniel
Standard User Daniel_g
(learned) Fri 04-Nov-11 17:11:35
Print Post

Re: More FTTC line stats


[re: asbokid] [link to this post]
 
Mode VDSL2
Traffic type PTM
DSL synchronization status Up
DSL up time 121226


Line Status Help



Downstream Upstream
Attainable rate (kbit/s) 38924 16129
SNR margin (dB) 8 26.6
Line attenuation (dB) 0 0
Output power (dBmV) 4.7 -11.1


Statistics Help



Path 0 Path 1
Downstream Upstream Downstream Upstream
Line rate (kbit/s) 31399 1999 0 0
CRC errors 3753 0 0 0
FEC errors 141 0 0 0
HEC errors 1074 0 0 0

What I got from the modem, hopefully better one day next year when it all changes, but not if I have to pay more, £18 month enough, tight git!

--------------------------------------------------------------------------
From Modem on the telnet thing just now, First time I have seen the profile thing copying what was typed in the entry above, I am not sure what to do but can copy people!.

Welcome Visiting Huawei Home Gateway
Copyright by Huawei Technologies Co., Ltd.
Login:admin
Password:
ATP>sh


BusyBox v1.9.1 (2010-10-15 17:59:06 CST) built-in shell (ash)
Enter 'help' for a list of built-in commands.

# xdslcmd info --show
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Max: Upstream rate = 16149 Kbps, Downstream rate = 38836 Kbps
Path: 0, Upstream rate = 1999 Kbps, Downstream rate = 31399 Kbps

Link Power State: L0
Mode: VDSL2 Annex B
VDSL2 Profile: Profile 8c
TPS-TC: PTM Mode
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 7.9 26.7
Attn(dB): 0.0 0.0
Pwr(dBm): 4.7 -11.1
VDSL2 framing
Path 0
B: 69 31
M: 1 2
T: 64 36
R: 16 16
S: 0.0709 0.9922
L: 9699 645
D: 455 1
I: 86 80
N: 86 80
Counters
Path 0
OHF: 39219359 1240846
OHFErr: 147 0
RS: 3235198163 3529261
RSCorr: 35492081 0
RSUnCorr: 3774 0

Path 0
HEC: 1076 0
OCD: 0 0
LCD: 0 0
Total Cells: 3799959904 0
Data Cells: 3098761 0
Drop Cells: 0
Bit Errors: 0 0

ES: 43 0
SES: 0 0
UAS: 15 15
AS: 134062

Path 0
INP: 3.00 0.00
PER: 3.40 13.39
delay: 8.00 0.00
OR: 56.38 57.33

Bitswap: 21893 73

#
ATP>

Any good who knows.

Edited by Daniel_g (Fri 04-Nov-11 20:51:32)

Standard User Daniel_g
(learned) Fri 04-Nov-11 20:53:54
Print Post

Re: More FTTC line stats


[re: asbokid] [link to this post]
 
Done what was asked. Found the top link did work if I took the last bit off but then did not know what to look for, the powerpoint thing works ok on the 2nd one.

Nice.
Standard User MrGrumpy
(eat-sleep-adslguide) Sat 05-Nov-11 09:59:18
Print Post

Re: vDMT


[re: Croftie] [link to this post]
 
Ok just unlocked my modem and loads of stuff on there! I take it nobody has altered anything too much for fear of causing issues?? Anyway here are my stats

# xdslcmd info --show
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Max: Upstream rate = 11743 Kbps, Downstream rate = 49780 Kbps
Path: 0, Upstream rate = 10000 Kbps, Downstream rate = 39996 Kbps

Link Power State: L0
Mode: VDSL2 Annex B
VDSL2 Profile: Profile 17a
TPS-TC: PTM Mode
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 7.0 7.6
Attn(dB): 0.0 0.0
Pwr(dBm): 11.7 6.6
VDSL2 framing
Path 0
B: 57 111
M: 1 2
T: 64 50
R: 16 16
S: 0.0461 0.7101
L: 12835 2704
D: 701 1
I: 74 120
N: 74 240
Counters
Path 0
OHF: 1081810 270787
OHFErr: 4 0
RS: 207756069 652549
RSCorr: 60149 2
RSUnCorr: 140 0

Path 0
HEC: 35 0
OCD: 0 0
LCD: 0 0
Total Cells: 184946037 0
Data Cells: 280856 0
Drop Cells: 0
Bit Errors: 0 0

ES: 1 0
SES: 0 0
UAS: 401 401
AS: 2404

Path 0
INP: 3.00 0.00
PER: 2.21 8.87
delay: 8.00 0.00
OR: 86.72 55.88

Bitswap: 451 6

Now unless they do some more jiggery pokery with frequencies looking at the stats there would be no point in going for 80/20 and paying for it! My max would seem not a hell of alot more than what I'm on now.

Regards

MrG

Remember: Amateurs...built the ark.
Professionals...built the Titanic


All spelling and grammatical errors are left in on purpose

Edited by MrGrumpy (Sat 05-Nov-11 10:10:25)

Standard User TheHorseman
(knowledge is power) Sat 05-Nov-11 11:13:36
Print Post

Re: vDMT


[re: MrGrumpy] [link to this post]
 
In reply to a post by MrGrumpy:
Ok just unlocked my modem and loads of stuff on there! I take it nobody has altered anything too much for fear of causing issues??

I have QOS turned off and that gets around another 1 Mbps Upload on speed tests. I have also connected port2 to my network, after changing the modem LAN IP so that it does not clash with my router.

BT -> Zen -> F2S -> Bulldog -> Be* -> BT Infinity
Far too many computers, 1 Wife, 3 Maine Coons and too many horses smile
Standard User MrGrumpy
(eat-sleep-adslguide) Sat 05-Nov-11 11:19:59
Print Post

Re: vDMT


[re: TheHorseman] [link to this post]
 
could you explain the connections with LAN2, just I remember years ago with a dsl modem and a WRT Linksys router that I had to put a firewall rule in to access the modems gui or even access via ssh?

Regards

MrG

Remember: Amateurs...built the ark.
Professionals...built the Titanic


All spelling and grammatical errors are left in on purpose
Standard User TheHorseman
(knowledge is power) Sat 05-Nov-11 11:46:48
Print Post

Re: vDMT


[re: MrGrumpy] [link to this post]
 
In reply to a post by MrGrumpy:
could you explain the connections with LAN2, just I remember years ago with a dsl modem and a WRT Linksys router that I had to put a firewall rule in to access the modems gui or even access via ssh?

All I have done is change the LAN IP of the modem to 192.168.1.2 as my router is 192.168.1.1 (if you have no device with the 192.168.1.1 IP then you do not need to change the modem). I then just plugged the LAN2 of the modem into a spare port on my local network switch (its right next to the modem in my case) the switch is connected to the LAN port on my router. I you have a spare LAN port on you router then you can plug the modem LAN2 directly to it. (this assumes that your LAN is using 192.168.1.x - if not then you would need to change the LAN2 IP).

BT -> Zen -> F2S -> Bulldog -> Be* -> BT Infinity
Far too many computers, 1 Wife, 3 Maine Coons and too many horses smile
Standard User NuttyMucker
(member) Sat 05-Nov-11 13:50:25
Print Post

Re: More FTTC line stats


[re: mr_bean] [link to this post]
 
I have just checked my router again today (Checked earlier in the week) and I am now on the 17a profile.

My line from the cabinet is approx 1.3 miles.

It appears my download throughput has increased by over 5Mb but my upload has remained unchanged.

The first set of stats are from earlier this week;

Welcome Visiting Huawei Home Gateway
Copyright by Huawei Technologies Co., Ltd.
Login:admin
Password:
ATP>sh


BusyBox v1.9.1 (2010-10-15 17:59:06 CST) built-in shell (ash)
Enter 'help' for a list of built-in commands.

# ls
var tmp proc linuxrc etc bin
usr sbin mnt lib dev BTAgent
# xdslcmd info --show
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 2
Max: Upstream rate = 1196 Kbps, Downstream rate = 18336 Kbps
Path: 0, Upstream rate = 1204 Kbps, Downstream rate = 16046 Kbps

Link Power State: L0
Mode: VDSL2 Annex B
VDSL2 Profile: Profile 8c
TPS-TC: PTM Mode
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 5.9 6.6
Attn(dB): 0.0 0.0
Pwr(dBm): 9.3 10.4
VDSL2 framing

And these from a few mins ago


#
# xdslcmd info --show
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 2
Max: Upstream rate = 1236 Kbps, Downstream rate = 23416 Kbps
Path: 0, Upstream rate = 797 Kbps, Downstream rate = 19372 Kbps

Link Power State: L0
Mode: VDSL2 Annex B
VDSL2 Profile: Profile 17a
TPS-TC: PTM Mode
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 6.8 19.0
Attn(dB): 0.0 0.0
Pwr(dBm): 10.8 10.5

I have just carried out a speedtest and now yunning at around 19Mb after rebooting the modem smile

Edited by NuttyMucker (Sat 05-Nov-11 13:56:29)

Standard User MrGrumpy
(eat-sleep-adslguide) Sat 05-Nov-11 15:22:42
Print Post

Re: vDMT


[re: TheHorseman] [link to this post]
 
strange I actually tried that first laugh anyway all good to go now can play around to my hearts content tongue

Regards

MrG

Remember: Amateurs...built the ark.
Professionals...built the Titanic


All spelling and grammatical errors are left in on purpose
Standard User reddev86
(regular) Sun 06-Nov-11 02:16:31
Print Post

Re: More FTTC line stats


[re: NuttyMucker] [link to this post]
 
Finally got round to unlocking the modem. Also hooked up a connection from LAN2 to a spare port on the router, and changed the modem IP to avoid conflicts...handy

Going by other stats on this thread, im guessing my line is average, at best. But overall I can't complain, my line is aluminium, and theres 550m of it.

I've noticed that I'm still on 8c, so again, by these stats, I would have little, or nothing to gain by the 80/20 product. Taking the average of the attenuation over downstream Bands 1 and 2, that leaves my line with 32.9dB attenuation...that can't be good!

# xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Max: Upstream rate = 15195 Kbps, Downstream rate = 34616 Kbps
Path: 0, Upstream rate = 1997 Kbps, Downstream rate = 34699 Kbps

Discovery Phase (Initial) Band Plan
US: (0,95) (696,1183)
DS: (32,687) (1192,1627)
Medley Phase (Final) Band Plan
US: (0,95) (696,1183)
DS: (32,687) (1192,1627)
VDSL Port Details Upstream Downstream
Attainable Net Data Rate: 15195 kbps 34616 kbps
Actual Aggregate Tx Power: 2.3 dBm 8.5 dBm
============================================================================
VDSL Band Status U0 U1 U2 U3 D1 D2 D3
Line Attenuation(dB): 7.2 38.4 N/A N/A 17.3 48.4 N/A

Signal Attenuation(dB): 8.1 37.6 N/A N/A 17.3 48.4 N/A

SNR Margin(dB): 26.8 26.6 N/A N/A 6.0 5.8 N/A

TX Power(dBm): -10.7 2.0 N/A N/A 7.3 2.6 N/A

FTTC via Plusnet Fibre Extra Pro
33mbit down, capped to 2Mbit up
NILN exchange - 550m from cabinet
Netgear WNR1000
Standard User MrGrumpy
(eat-sleep-adslguide) Sun 06-Nov-11 07:59:01
Print Post

Re: vDMT


[re: TheHorseman] [link to this post]
 
So does anyone know what line lengths these stats equate to?

# xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Max: Upstream rate = 11854 Kbps, Downstream rate = 48068 Kbps
Path: 0, Upstream rate = 10000 Kbps, Downstream rate = 39996 Kbps

Discovery Phase (Initial) Band Plan
US: (0,95) (868,1207) (1972,2783)
DS: (32,859) (1216,1963) (2792,3939)
Medley Phase (Final) Band Plan
US: (0,95) (868,1207) (1972,2783)
DS: (32,859) (1216,1963) (2792,3939)
VDSL Port Details Upstream Downstream
Attainable Net Data Rate: 11854 kbps 48068 kbps
Actual Aggregate Tx Power: 6.6 dBm 11.8 dBm
============================================================================
VDSL Band Status U0 U1 U2 U3 D1 D2 D3
Line Attenuation(dB): 5.6 31.5 46.1 N/A 15.4 39.1 59.9
Signal Attenuation(dB): 7.1 30.6 44.7 N/A 15.4 39.1 59.9
SNR Margin(dB): 7.9 7.7 7.7 N/A 6.3 6.3 6.3
TX Power(dBm): -3.9 -13.3 6.3 N/A 8.0 7.9 4.1


Also I assume the max rate attained is exactly that and as far as speed upgrades go? So until BT introduce another freq profile I will not see any higher?

Regards

MrG

Remember: Amateurs...built the ark.
Professionals...built the Titanic


All spelling and grammatical errors are left in on purpose
Standard User burakkucat
(committed) Sun 06-Nov-11 20:46:31
Print Post

Re: vDMT


[re: MrGrumpy] [link to this post]
 
Line length? Sorry, no.

The best I can do is to show you some statistic from a line that has been (electronically) measured as 440 yards (400 m) from the NTE5/A to the PCP - FTTC tie-cables --

# xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Max: Upstream rate = 24809 Kbps, Downstream rate = 73424 Kbps
Path: 0, Upstream rate = 10000 Kbps, Downstream rate = 39998 Kbps

Discovery Phase (Initial) Band Plan
US: (0,95) (868,1207) (1972,2783)
DS: (32,859) (1216,1963) (2792,3939)
Medley Phase (Final) Band Plan
US: (0,95) (868,1207) (1972,2783)
DS: (32,859) (1216,1963) (2792,3939)
VDSL Port Details Upstream Downstream
Attainable Net Data Rate: 24809 kbps 73424 kbps
Actual Aggregate Tx Power: 6.9 dBm 13.1 dBm
============================================================================
VDSL Band Status U0 U1 U2 U3 D1 D2 D3
Line Attenuation(dB): 3.6 20.9 30.7 N/A 10.8 26.4 39.8
Signal Attenuation(dB): 10.6 20.1 29.7 N/A 10.8 26.4 39.8
SNR Margin(dB): 23.4 22.0 22.2 N/A 15.8 15.9 15.8
TX Power(dBm): -4.4 -26.6 6.6 N/A 9.8 8.2 6.7

# xdslcmd info --show
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Max: Upstream rate = 24805 Kbps, Downstream rate = 73424 Kbps
Path: 0, Upstream rate = 10000 Kbps, Downstream rate = 39998 Kbps

Link Power State: L0
Mode: VDSL2 Annex B
VDSL2 Profile: Profile 17a
TPS-TC: PTM Mode
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 15.8 22.2
Attn(dB): 0.0 0.0
Pwr(dBm): 13.1 6.9
VDSL2 framing
Path 0
B: 239 111
M: 1 2
T: 64 50
R: 0 16
S: 0.1909 0.7101
L: 10055 2704
D: 1 1
I: 240 120
N: 240 240
Counters
Path 0
OHF: 126248 43856
OHFErr: 0 0
RS: 0 2192532
RSCorr: 0 0
RSUnCorr: 0 0

Path 0
HEC: 0 0
OCD: 0 0
LCD: 0 0
Total Cells: 29763055 0
Data Cells: 2696 0
Drop Cells: 0
Bit Errors: 0 0

ES: 0 0
SES: 0 0
UAS: 87 87
AS: 389

Path 0
INP: 0.00 0.00
PER: 3.05 8.87
delay: 0.00 0.00
OR: 65.46 55.88

Bitswap: 4 1

#


-----------------------------------------------------

100% Linux and, previously, Unix.
Standard User MrGrumpy
(eat-sleep-adslguide) Mon 07-Nov-11 05:32:20
Print Post

Re: vDMT


[re: burakkucat] [link to this post]
 
well my line must be longer than that I assume, although the green cab is not more than 300m away however my line must go round all the houses tongue or its a poor line!

Regards

MrG

Remember: Amateurs...built the ark.
Professionals...built the Titanic


All spelling and grammatical errors are left in on purpose
Standard User TheHorseman
(knowledge is power) Tue 08-Nov-11 13:24:58
Print Post

Re: vDMT


[re: MrGrumpy] [link to this post]
 
They have just changed the profile on my line to 17a and I now get this:

# xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 2
Max: Upstream rate = 34447 Kbps, Downstream rate = 99264 Kbps
Path: 0, Upstream rate = 10000 Kbps, Downstream rate = 39998 Kbps

Discovery Phase (Initial) Band Plan
US: (0,95) (868,1207) (1972,2783)
DS: (32,859) (1216,1963) (2792,3939)
Medley Phase (Final) Band Plan
US: (0,95) (868,1207) (1972,2783)
DS: (32,859) (1216,1963) (2792,3939)
VDSL Port Details Upstream Downstream
Attainable Net Data Rate: 34447 kbps 99264 kbps
Actual Aggregate Tx Power: 4.1 dBm 13.0 dBm
============================================================================
VDSL Band Status U0 U1 U2 U3 D1 D2 D3
Line Attenuation(dB): 3.4 16.3 23.6 N/A 8.6 19.9 30.8
Signal Attenuation(dB): 7.8 N/A 22.8 N/A 8.6 19.9 30.8
SNR Margin(dB): 23.0 N/A 22.7 N/A 23.1 23.1 23.3
TX Power(dBm): -10.7 -128.0 4.0 N/A 9.6 8.1 6.6
#


smile smile

BT -> Zen -> F2S -> Bulldog -> Be* -> BT Infinity
Far too many computers, 1 Wife, 3 Maine Coons and too many horses smile
Standard User lockyatlrg
(fountain of knowledge) Tue 08-Nov-11 13:40:19
Print Post

Re: vDMT


[re: TheHorseman] [link to this post]
 
Best I have seen to date, very nice, what was your stats before? and what was your estimate?.

BT Infinity
ROUTER:-Netgear WNDR37AV
JDSU Stats
Sync 39999D 9995U
Attenuation: 9.6 SNR: 11.4
Line Length 300meters
Standard User TheHorseman
(knowledge is power) Tue 08-Nov-11 13:51:05
Print Post

Re: vDMT


[re: lockyatlrg] [link to this post]
 
In reply to a post by lockyatlrg:
Best I have seen to date, very nice, what was your stats before? and what was your estimate?.


Previous stats were:

# xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Max: Upstream rate = 17136 Kbps, Downstream rate = 48052 Kbps
Path: 0, Upstream rate = 9995 Kbps, Downstream rate = 39999 Kbps

Discovery Phase (Initial) Band Plan
US: (0,95) (696,1183)
DS: (32,687) (1192,1627)
Medley Phase (Final) Band Plan
US: (0,95) (696,1183)
DS: (32,687) (1192,1627)
VSDL Port Details Upstream Downstream
Attainable Net Data Rate: 17136 kbps 48052 kbps
Actual Aggregate Tx Power: - 16.7 dBm 7.7 dBm
============================================================================
VDSL Band Status U0 U1 U2 U3 D1 D2 D3
Line Attenuation(dB): 3.6 15.4 N/A N/A 7.9 18.9 N/A
signal Attenuation(dB): 0.0 14.4 N/A N/A 7.9 18.9 N/A
SNR Margin(dB): 22.1 22.0 N/A N/A 11.6 11.6 N/A
TX Power(dBm): -27.6 -17.0 N/A N/A 6.0 2.6 N/A
#


The BT speed estimate was 31.6 / 7.5 (wrong as usual).

BT -> Zen -> F2S -> Bulldog -> Be* -> BT Infinity
Far too many computers, 1 Wife, 3 Maine Coons and too many horses smile
Standard User lockyatlrg
(fountain of knowledge) Tue 08-Nov-11 14:03:05
Print Post

Re: vDMT


[re: TheHorseman] [link to this post]
 
Max: Upstream rate = 17407 Kbps, Downstream rate = 47660 Kbps
Path: 0, Upstream rate = 9995 Kbps, Downstream rate = 39999 Kbps

Discovery Phase (Initial) Band Plan
US: (0,95) (696,1183)
DS: (32,687) (1192,1627)
Medley Phase (Final) Band Plan
US: (0,95) (696,1183)
DS: (32,687) (1192,1627)
VDSL Port Details Upstream Downstream
Attainable Net Data Rate: 17307 kbps 48560 kbps
Actual Aggregate Tx Power: - 17.7 dBm 7.7 dBm
================================================== ==========================
VDSL Band Status U0 U1 U2 U3 D1 D2 D3
Line Attenuation(dB): 3.4 13.4 N/A N/A 7.8 17.9 N/A

Signal Attenuation(dB): 0.0 13.5 N/A N/A 7.8 17.9 N/A

SNR Margin(dB): 22.3 22.3 N/A N/A 10.9 10.9 N/A

TX Power(dBm): -28.3 -18.0 N/A N/A 6.1 2.6 N/A

my estimate was 32.5 and 8.5

my attainable rate has dropped to high 46 - 47 mark depending on the day, but my cab is getting very populated now. Used to be 48 to 49 mark.

I'm hoping for full 80/20 sync when 17a is enabled on my line.

BT Infinity
ROUTER:-Netgear WNDR37AV
JDSU Stats
Sync 39999D 9995U
Attenuation: 9.6 SNR: 11.4
Line Length 300meters

Edited by lockyatlrg (Tue 08-Nov-11 14:05:16)

Standard User lockyatlrg
(fountain of knowledge) Tue 08-Nov-11 14:46:53
Print Post

Re: vDMT


[re: lockyatlrg] [link to this post]
 
# xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 2
Max: Upstream rate = 35659 Kbps, Downstream rate = 97040 Kbps
Path: 0, Upstream rate = 10000 Kbps, Downstream rate = 39998 Kbps

Discovery Phase (Initial) Band Plan
US: (0,95) (868,1207) (1972,2783)
DS: (32,859) (1216,1963) (2792,3939)
Medley Phase (Final) Band Plan
US: (0,95) (868,1207) (1972,2783)
DS: (32,859) (1216,1963) (2792,3939)
VDSL Port Details Upstream Downstream
Attainable Net Data Rate: 35659 kbps 97040 kbps
Actual Aggregate Tx Power: 2.8 dBm 13.1 dBm
================================================== ==========================
VDSL Band Status U0 U1 U2 U3 D1 D2 D3
Line Attenuation(dB): 3.1 15.0 21.0 N/A 8.5 18.6 29.1

Signal Attenuation(dB): 8.3 15.4 20.2 N/A 8.5 18.6 29.1

SNR Margin(dB): 22.9 22.6 22.9 N/A 21.5 22.8 22.6

TX Power(dBm): -11.6 -128.0 2.7 N/A 9.8 8.2 6.3



I think I just answered my own question, checked my stats and been upgraded.

BT Infinity
ROUTER:-Netgear WNDR37AV
JDSU Stats
Sync 39999D 9995U
Attenuation: 9.6 SNR: 11.4
Line Length 300meters
Standard User MrGrumpy
(eat-sleep-adslguide) Tue 08-Nov-11 16:44:31
Print Post

Re: vDMT


[re: TheHorseman] [link to this post]
 
You must be with in spitting distance of your green cab with stats like that? tongue I know where my cab is but the line I have to it must be ancient!

Regards

MrG

Remember: Amateurs...built the ark.
Professionals...built the Titanic


All spelling and grammatical errors are left in on purpose
Standard User burakkucat
(committed) Tue 08-Nov-11 17:49:19
Print Post

Re: vDMT


[re: lockyatlrg] [link to this post]
 
Very nice, indeed! Does your D-side consist of a cable from the back of the NTE5/A straight through the wall and into the PCP on the other side? laugh

-----------------------------------------------------

100% Linux and, previously, Unix.
Standard User TheHorseman
(knowledge is power) Tue 08-Nov-11 17:52:25
Print Post

Re: vDMT


[re: MrGrumpy] [link to this post]
 
In reply to a post by MrGrumpy:
You must be with in spitting distance of your green cab with stats like that? tongue I know where my cab is but the line I have to it must be ancient!

My cab is about 110m behind the house in the next street but the cable run is longer. I paced it out at around 200m following the likely cable run. My stats are similar to lockyatlrg's and his line is 300m, so I guess that mine is similar.

BT -> Zen -> F2S -> Bulldog -> Be* -> BT Infinity
Far too many computers, 1 Wife, 3 Maine Coons and too many horses smile
Standard User lockyatlrg
(fountain of knowledge) Tue 08-Nov-11 18:16:44
Print Post

Re: vDMT


[re: TheHorseman] [link to this post]
 
yeah my cab is about 200 meters by road, but line length is 300, but it's all underground 0.5 copper and this estate is 4 years old

I did have really poor stats for a while with drops outs etc, I had a lift and shift done as the post I was on was faulty.

they did a length test on the JDSU and it come back at just shy of 300 meters.

I'm chuffed with my stats and leaves plenty of room for the 80/20 product.

BT Infinity
ROUTER:-Netgear WNDR37AV
JDSU Stats
Sync 39999D 9995U
Attenuation: 9.6 SNR: 11.4
Line Length 300meters
Anonymous
(Unregistered)Tue 08-Nov-11 22:43:30
Print Post

Re: vDMT


[re: MrGrumpy] [link to this post]
 
# xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Max: Upstream rate = 36078 Kbps, Downstream rate = 96128 Kbps
Path: 0, Upstream rate = 10000 Kbps, Downstream rate = 39998 Kbps

Discovery Phase (Initial) Band Plan
US: (0,95) (868,1207) (1972,2783)
DS: (32,859) (1216,1963) (2792,3939)
Medley Phase (Final) Band Plan
US: (0,95) (868,1207) (1972,2783)
DS: (32,859) (1216,1963) (2792,3939)
VDSL Port Details Upstream Downstream
Attainable Net Data Rate: 36078 kbps 96128 kbps
Actual Aggregate Tx Power: - 10.1 dBm 13.2 dBm
============================================================================
VDSL Band Status U0 U1 U2 U3 D1 D2 D3
Line Attenuation(dB): 1.8 6.8 8.6 N/A 3.9 8.5 13.5

Signal Attenuation(dB): 0.0 5.5 6.8 N/A 3.9 8.5 13.5

SNR Margin(dB): 30.9 30.8 30.9 N/A 21.9 22.0 22.1

TX Power(dBm): -25.7 -45.2 -10.8 N/A 9.9 8.1 6.6
Standard User burakkucat
(committed) Tue 08-Nov-11 23:40:53
Print Post

Re: vDMT


[re: lockyatlrg] [link to this post]
 
lift and shift done as the post I was on was faulty.
Erm, sed 's/post/port/', I guess. laugh

-----------------------------------------------------

100% Linux and, previously, Unix.
Standard User lockyatlrg
(fountain of knowledge) Tue 08-Nov-11 23:44:58
Print Post

Re: vDMT


[re: burakkucat] [link to this post]
 
Dunno, bt man came to my house did a load of tests on the pair, pair came back 100% got a call from openreach for new ties or something along them lines, he went to the cab and came back and my line stats where back to very good levels and all was well laugh

BT Infinity
ROUTER:-Netgear WNDR37AV
JDSU Stats
Sync 39999D 9995U
Attenuation: 9.6 SNR: 11.4
Line Length 300meters
Standard User sean2003
(experienced) Wed 09-Nov-11 10:54:01
Print Post

Re: More FTTC line stats


[re: mr_bean] [link to this post]
 
Two FTTC lines here, Stats are:


FTTC Line 1:


xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Max: Upstream rate = 23334 Kbps, Downstream rate = 73060 Kbps
Path: 0, Upstream rate = 10000 Kbps, Downstream rate = 32396 Kbps

Discovery Phase (Initial) Band Plan
US: (0,95) (868,1207) (1972,2783)
DS: (32,859) (1216,1963) (2792,3939)
Medley Phase (Final) Band Plan
US: (0,95) (868,1207) (1972,2783)
DS: (32,859) (1216,1963) (2792,3939)
VDSL Port Details Upstream Downstream
Attainable Net Data Rate: 23334 kbps 73060 kbps
Actual Aggregate Tx Power: 6.9 dBm 13.5 dBm
============================================================================
VDSL Band Status U0 U1 U2 U3 D1 D2 D3
Line Attenuation(dB): 4.7 24.5 35.9 N/A 12.7 30.0 45.0
Signal Attenuation(dB): 9.8 23.7 34.9 N/A 12.7 30.0 45.0
SNR Margin(dB): 13.8 13.7 13.7 N/A 13.7 14.1 13.7
TX Power(dBm): -4.2 -21.3 6.5 N/A 10.6 7.8 7.0



FTTC Line 2:

xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 2
Max: Upstream rate = 19345 Kbps, Downstream rate = 71340 Kbps
Path: 0, Upstream rate = 10000 Kbps, Downstream rate = 39999 Kbps

Discovery Phase (Initial) Band Plan
US: (0,95) (868,1207) (1972,2783)
DS: (32,859) (1216,1963) (2792,3939)
Medley Phase (Final) Band Plan
US: (0,95) (868,1207) (1972,2783)
DS: (32,859) (1216,1963) (2792,3939)
VDSL Port Details Upstream Downstream
Attainable Net Data Rate: 19345 kbps 71340 kbps
Actual Aggregate Tx Power: 6.8 dBm 13.5 dBm
============================================================================
VDSL Band Status U0 U1 U2 U3 D1 D2 D3
Line Attenuation(dB): 4.9 25.3 36.7 N/A 13.0 31.1 46.0
Signal Attenuation(dB): 10.5 24.4 35.5 N/A 13.0 31.1 46.0
SNR Margin(dB): 12.0 11.7 11.6 N/A 15.9 15.9 15.9
TX Power(dBm): -3.5 -20.1 6.3 N/A 10.8 8.2 5.6
Standard User cmn
(member) Wed 09-Nov-11 11:22:20
Print Post

Re: More FTTC line stats


[re: sean2003] [link to this post]
 
And another, distance at least 500m

# xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 2
Max: Upstream rate = 23950 Kbps, Downstream rate = 76012 Kbps
Path: 0, Upstream rate = 10000 Kbps, Downstream rate = 39996 Kbps

Discovery Phase (Initial) Band Plan
US: (0,95) (868,1207) (1972,2783)
DS: (32,859) (1216,1963) (2792,3939)
Medley Phase (Final) Band Plan
US: (0,95) (868,1207) (1972,2783)
DS: (32,859) (1216,1963) (2792,3939)
VDSL Port Details Upstream Downstream
Attainable Net Data Rate: 23950 kbps 76012 kbps
Actual Aggregate Tx Power: 6.8 dBm 13.1 dBm
============================================================================
VDSL Band Status U0 U1 U2 U3 D1 D2 D3
Line Attenuation(dB): 4.6 23.6 34.8 N/A 12.0 29.1 45.1
Signal Attenuation(dB): 9.7 22.5 33.2 N/A 12.0 29.1 45.1
SNR Margin(dB): 22.1 21.3 21.2 N/A 14.3 14.2 15.9
TX Power(dBm): -3.6 -22.0 6.4 N/A 9.9 7.9 6.5
Standard User MrGrumpy
(eat-sleep-adslguide) Wed 09-Nov-11 20:58:53
Print Post

Re: More FTTC line stats


[re: cmn] [link to this post]
 
my line must be well and truely [censored] or it goes round all the houses first!

Regards

MrG

Remember: Amateurs...built the ark.
Professionals...built the Titanic


All spelling and grammatical errors are left in on purpose
Standard User BuckleZ
(fountain of knowledge) Thu 10-Nov-11 00:21:23
Print Post

Re: More FTTC line stats


[re: MrGrumpy] [link to this post]
 
Still 8c here, 200m from cabinet, excited to see what 17a will show :smile

xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Max: Upstream rate = 17535 Kbps, Downstream rate = 47292 Kbps
Path: 0, Upstream rate = 9995 Kbps, Downstream rate = 39999 Kbps

Link Power State: L0
Mode: VDSL2 Annex B
VDSL2 Profile: Profile 8c
TPS-TC: PTM Mode
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 11.2 22.0
Attn(dB): 0.0 0.0
Pwr(dBm): 6.5 -21.6
VDSL2 framing
Path 0
B: 239 223
M: 1 1
T: 64 55
R: 0 4
S: 0.1910 0.7125
L: 10054 2560
D: 1 1
I: 240 114
N: 240 228
Counters
Path 0
OHF: 601425852 1648743
OHFErr: 1212 1087
RS: 0 1928864
RSCorr: 0 2080
RSUnCorr: 0 0

Path 0
HEC: 439 0
OCD: 0 0
LCD: 0 0
Total Cells: 61795273 0
Data Cells: 1167133374 0
Drop Cells: 0
Bit Errors: 0 0

ES: 987 1049
SES: 0 0
UAS: 41 41
AS: 1844869

Path 0
INP: 0.00 0.00
PER: 3.05 9.79
delay: 0.00 0.00
OR: 60.21 26.13

Bitswap: 88 252

Total time = 1 days 8 hours 31 min 27 sec
FEC: 0 0
CRC: 1212 0
ES: 987 1049
SES: 0 0
UAS: 41 41
LOS: 0 0
LOF: 0 0
Latest 15 minutes time = 1 min 27 sec
FEC: 0 0
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
Previous 15 minutes time = 15 min 0 sec
FEC: 0 0
CRC: 2 0
ES: 2 1
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
Latest 1 day time = 8 hours 31 min 27 sec
FEC: 0 0
CRC: 32 0
ES: 27 15
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
Previous 1 day time = 24 hours 0 sec
FEC: 0 0
CRC: 71 0
ES: 47 47
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
Since Link time = 21 days 8 hours 27 min 49 sec
FEC: 0 2080
CRC: 1212 1087
ES: 987 1049
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
#

My Broadband Speed Test
BT Infinity
~200m from NILDW PCP21
40000/10000 Sync
Standard User Croftie
(member) Thu 10-Nov-11 01:47:12
Print Post

Re: More FTTC line stats


[re: BuckleZ] [link to this post]
 
17a kicked in a few nights ago here. I know for a fact there are at least 90 FTTC connections on my cab, probably 100+ by now.

Had max profile for the first 8 months, then dropped to 32.2Mb overnight during some planned maintenance in the area, recently settled at 35.5Mb and 17a has now restored full profile again.

JDSU reported on install:
Attainable: 46/16
D-Side: 300M ( Aluminium )

8c:
8c stats montage.jpg
Text
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# xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY statusStatus: Showtime
Retrain Reason: 2Max:    Upstream rate = 16253 Kbps, Downstream rate = 39464 Kbps
Path:   0, Upstream rate = 9999 Kbps, Downstream rate = 37841 Kbps 
Discovery Phase (Initial) Band PlanUS: (0,95) (696,1183) 
DS: (32,687) (1192,1627) Medley Phase (Final) Band Plan
US: (0,95) (696,1183) DS: (32,687) (1192,1627) 
       VDSL Port Details       Upstream        DownstreamAttainable Net Data Rate:      16253 kbps         39464 kbps
Actual Aggregate Tx Power:    -  13.4 dBm           8.8 dBm============================================================================
  VDSL Band Status        U0      U1      U2      U3      D1      D2      D3  Line Attenuation(dB):  3.6     18.7     N/A     N/A    9.6     23.5     N/A   
Signal Attenuation(dB):  0.0     17.4     N/A     N/A    9.6     23.5     N/A           SNR Margin(dB):  15.3    15.2     N/A     N/A    7.1     7.1      N/A   
         TX Power(dBm): -24.6   -13.8     N/A     N/A    7.6     2.8      N/A

17a:
17a stats montage.jpg
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# xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY statusStatus: Showtime
Retrain Reason: 2Max:    Upstream rate = 25879 Kbps, Downstream rate = 79672 Kbps
Path:   0, Upstream rate = 10000 Kbps, Downstream rate = 39998 Kbps 
Discovery Phase (Initial) Band PlanUS: (0,95) (868,1207) (1972,2783) 
DS: (32,859) (1216,1963) (2792,3939) Medley Phase (Final) Band Plan
US: (0,95) (868,1207) (1972,2783) DS: (32,859) (1216,1963) (2792,3939) 
       VDSL Port Details       Upstream        DownstreamAttainable Net Data Rate:      25879 kbps         79672 kbps
Actual Aggregate Tx Power:        6.8 dBm          13.4 dBm============================================================================
  VDSL Band Status        U0      U1      U2      U3      D1      D2      D3  Line Attenuation(dB):  3.5     19.6    28.6     N/A    10.3    24.4    38.4   
Signal Attenuation(dB):  6.0     19.0    27.8     N/A    10.3    24.4    38.4           SNR Margin(dB):  21.7    21.9    21.9     N/A    17.0    18.1    17.1   
         TX Power(dBm): -6.4    -30.0    6.6      N/A    10.4    7.9     6.6
Standard User TheHorseman
(knowledge is power) Thu 10-Nov-11 10:26:03
Print Post

Re: More FTTC line stats


[re: BuckleZ] [link to this post]
 
At a guess you'll get similar to me, your stats look very like mine.

BT -> Zen -> F2S -> Bulldog -> Be* -> BT Infinity
Far too many computers, 1 Wife, 3 Maine Coons and too many horses smile
Standard User epyon
(committed) Thu 10-Nov-11 10:49:28
Print Post

Re: More FTTC line stats


[re: BuckleZ] [link to this post]
 
90,000/25,000Kbps probably.

BE*Unlimited 17959/1412Kbps
My Broadband Speed TestMy Broadband Speed Test

Edited by epyon (Thu 10-Nov-11 10:49:39)

Standard User griff_90
(fountain of knowledge) Thu 10-Nov-11 11:51:00
Print Post

Now on 17a


[re: mr_bean] [link to this post]
 
(Obviously I'm still synced at the same speed but my attainable rates have shot up)

# xdslcmd info --show
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 2
Max: Upstream rate = 31485 Kbps, Downstream rate = 97084 Kbps
Path: 0, Upstream rate = 10000 Kbps, Downstream rate = 39999 Kbps

Link Power State: L0
Mode: VDSL2 Annex B
VDSL2 Profile: Profile 17a
TPS-TC: PTM Mode
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 22.7 21.2
Attn(dB): 0.0 0.0
Pwr(dBm): 12.6 4.1

Edited by griff_90 (Thu 10-Nov-11 11:51:31)

Standard User Bobby_Valentino
(fountain of knowledge) Thu 10-Nov-11 18:04:59
Print Post

Re: Now on 17a


[re: griff_90] [link to this post]
 
In reply to a post by griff_90:
(Obviously I'm still synced at the same speed but my attainable rates have shot up)

# xdslcmd info --show
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 2
Max: Upstream rate = 31485 Kbps, Downstream rate = 97084 Kbps
Path: 0, Upstream rate = 10000 Kbps, Downstream rate = 39999 Kbps

Link Power State: L0
Mode: VDSL2 Annex B
VDSL2 Profile: Profile 17a
TPS-TC: PTM Mode
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 22.7 21.2
Attn(dB): 0.0 0.0
Pwr(dBm): 12.6 4.1

Sweet!

My Broadband Speed Test
Standard User swervinc
(regular) Fri 11-Nov-11 11:14:51
Print Post

Re: Now on 17a


[re: Bobby_Valentino] [link to this post]
 
Once unlocked is it possible to leave the LAN 2 connected to the network and change the default login password?
Anonymous
(Unregistered)Fri 11-Nov-11 19:26:05
Print Post

Re: Now on 17a


[re: swervinc] [link to this post]
 
Got some snaps of jdsu today showing every screen in relation to vdsl.
Stats are as follows:

vdsl2 17
up 10000K down 40000K
max rate up 49282K 113109K
capacity 20% 35%
noise margin 30.7db 26.0db
line atthn 14.8db 11.5db
signal attn 14.9db 11.4db
tx power up 2.6dbm 12.1dbm
psd -64.5 -58.6


est length 0.4km

actual length using tdr - 335.4m (confirmed 0.5 copper). D side length is measured with whole line connected as dslam causes a regular "dis spike" every other second.

lots of screens showing uas crc etc but all values zero.

Engineer advised that the openreach modem tends to sync faster than the engineers jdsu so looking good for future speed uplifts.

Mr F
Standard User nalla
(regular) Sun 13-Nov-11 10:48:29
Print Post

Re: Now on 17a


[re: Anonymous] [link to this post]
 
hi all just managed to get hacked firmware installed for my modem, how do i find out what profile im on and if im possibly going to get any sort of speed increase when 17a is enabled ( if not already ), my actual current speends are around 30mb/s down and 7 mb/s up, i found something in my modem which states attainable rate os 54mb/s or thereabouts, i did copy and paste the acutual readings but i wouldnt paste into this for some reason, will try again.

got it

Line Status
Help
Downstream Upstream
Attainable rate (kbit/s) 54112 6827
SNR margin (dB) 13.9 6.1
Line attenuation (dB) 0 0
Output power (dBmV) 11.9 2.9

Edited by nalla (Sun 13-Nov-11 10:52:39)

Standard User griff_90
(fountain of knowledge) Sun 13-Nov-11 15:08:36
Print Post

Re: Now on 17a


[re: nalla] [link to this post]
 
Telnet into the modem -

xdslcmd info --show
Standard User nalla
(regular) Sun 13-Nov-11 19:59:29
Print Post

Re: Now on 17a


[re: griff_90] [link to this post]
 
ok well i have just got hold of putty and installed it, telneted into the modem, it asks for user name and pass which i put in as admin, then it says atp, i tried to put in the command xdslcmd in there but nothing, what am i doing wrong, any help would be appreciated
Standard User reddev86
(regular) Sun 13-Nov-11 20:17:31
Print Post

Re: Now on 17a


[re: nalla] [link to this post]
 
telnet into the modem, Login admin, password admin, then when ATP> appears, type sh and hit enter.

Then enter the xdslcmd command.

FTTC via Plusnet Fibre Extra Pro
33mbit down, capped to 2Mbit up
NILN exchange - 550m from cabinet
Netgear WNR1000
Standard User mr_bean
(member) Sun 13-Nov-11 20:26:17
Print Post

Re: Now on 17a


[re: nalla] [link to this post]
 
at the ATP> prompt type sh <return> to drop into the busybox shell, then you can use xdslcmd
Standard User nalla
(member) Sun 13-Nov-11 20:53:40
Print Post

Re: Now on 17a


[re: reddev86] [link to this post]
 
ok cheers for that guys have got it going now, it does say 17a now, but i didnt get any difference in my down speeds at all oh well, now im just wandering about the max attainable mine says 48mb/s mbut i only get 32, will i get closer to the max attainable at any time soon, cheers again.
Standard User reddev86
(regular) Sun 13-Nov-11 21:35:51
Print Post

Re: Now on 17a


[re: nalla] [link to this post]
 
If you are on 17a, it seems that is all your line can handle, at least until BT come up with further technology to get more out of lines, like vectoring etc.

What is your actual sync rate, are you syncing at 32meg? If so, that is as high as you're gonna get, for the time being anyway.

When BT launch the 80/20 product, all they will do is remove the 40down/10up sync rate cap, but if you are not hitting either the downstream or upstream caps on 17a, then it will be of no benefit to you I'm afraid.

As for the max attainable rate - although it can be used to approximate the speed your line could be capable of, I wouldn't put 100% trust in that figure. I'm still on 8c, and my max attainable rate is nearly 3Meg lower than my actual sync rate. So it's either a bug in the firmware (possible), or it's just not very accurate.

FTTC via Plusnet Fibre Extra Pro
33mbit down, capped to 2Mbit up
NILN exchange - 550m from cabinet
Netgear WNR1000

Edited by reddev86 (Sun 13-Nov-11 21:38:51)

Standard User Zarjaz
(knowledge is power) Mon 14-Nov-11 08:54:01
Print Post

From the JDSU.


[re: mr_bean] [link to this post]
 
Day off, so I thought I'd plug the in a JDSU and see what it showed.
I do wonder if the stats from the unlocked modems being reported on here are correct with regard to the max attainable rate. Some posts are showing little improvement, mine looks like a pleasing hike is possible, I guess time will show whose will prove to be correct ? My D-side line length is just over 500 meters.

Current sync rate 40000/10000

Attenuation 17db Profile 17a d/s snr 16.7db

Max rate up and down 22057/77821

The instrument often shows a sync rate lower than that achieved by the Openreach modem, so maybe it will just miss the full 80000.

Standard User mr_bean
(member) Mon 14-Nov-11 10:30:44
Print Post

Re: Now on 17a


[re: reddev86] [link to this post]
 
....and my max attainable rate is nearly 3Meg lower than my actual sync rate. So it's either a bug in the firmware (possible), or it's just not very accurate.
It looks as though the "max attainable" figure is actually "max attainable at 6dB SNRM" thus it is possible for this figure to be lower than the current sync if the SNRM drifts below 6dB. If you resync at that point your sync speed will probably drop. If you don't resync it will hold (unless the SNRM falls further) - I had a 39999Kbps sync at about 3dB SNRM for something like 10 days just before the switch to 17a but eventually the inevitable happened and the speed dropped to 37M.

"Probably" BTW because I have noticed that my modem does tend to report a gradual slight fall in max attainable and SNRM over a few days following a resync which tends to go back up if I force another resync. It never approaches 3dB though - usually about 0.5dB "improvement"

Edited by mr_bean (Mon 14-Nov-11 10:31:33)

Standard User reddev86
(regular) Mon 14-Nov-11 12:51:48
Print Post

Re: Now on 17a


[re: mr_bean] [link to this post]
 
It looks as though the "max attainable" figure is actually "max attainable at 6dB SNRM" thus it is possible for this figure to be lower than the current sync if the SNRM drifts below 6dB. If you resync at that point your sync speed will probably drop. If you don't resync it will hold (unless the SNRM falls further) - I had a 39999Kbps sync at about 3dB SNRM for something like 10 days just before the switch to 17a but eventually the inevitable happened and the speed dropped to 37M.

"Probably" BTW because I have noticed that my modem does tend to report a gradual slight fall in max attainable and SNRM over a few days following a resync which tends to go back up if I force another resync. It never approaches 3dB though - usually about 0.5dB "improvement"


Good point, however, my SNRM is at 6dB...

Max: Upstream rate = 15133 Kbps, Downstream rate = 31988 Kbps
Path: 0, Upstream rate = 1997 Kbps, Downstream rate = 34699 Kbps

Link Power State: L0
Mode: VDSL2 Annex B
VDSL2 Profile: Profile 8c
TPS-TC: PTM Mode
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 6.1 28.9
Attn(dB): 0.0 0.0
Pwr(dBm): 8.5 2.3

Also, yes, i've noticed that myself about the modem, my max attainable was around 36Meg when i first resynced (about 10 days ago), and over those 10 days the attainable has gradually crept downwards.

FTTC via Plusnet Fibre Extra Pro
33mbit down, capped to 2Mbit up
NILN exchange - 550m from cabinet
Netgear WNR1000
Standard User jchamier
(knowledge is power) Mon 14-Nov-11 18:52:43
Print Post

Re: From the JDSU.


[re: Zarjaz] [link to this post]
 
In reply to a post by Zarjaz:
My D-side line length is just over 500 meters.


Excellent numbers - I'm hoping (if I ever see an FTTC cab, sob!) that I might get similar, as my line to the PCP is about 500m on the various mapping tools. Yes I know the line route, I've seen the diagram on an OpenReach SFI's laptop!

James - be* pro - on THFB - sync about 17.2mbps - BQM
Standard User Bobby_Valentino
(fountain of knowledge) Mon 14-Nov-11 19:16:45
Print Post

Re: From the JDSU.


[re: Zarjaz] [link to this post]
 
In reply to a post by Zarjaz:
Day off, so I thought I'd plug the in a JDSU and see what it showed.
I do wonder if the stats from the unlocked modems being reported on here are correct with regard to the max attainable rate. Some posts are showing little improvement, mine looks like a pleasing hike is possible, I guess time will show whose will prove to be correct ? My D-side line length is just over 500 meters.

Current sync rate 40000/10000

Attenuation 17db Profile 17a d/s snr 16.7db

Max rate up and down 22057/77821

The instrument often shows a sync rate lower than that achieved by the Openreach modem, so maybe it will just miss the full 80000.

Wow if you 500 meteres away from your cab and you can get a potential of 78mbps... thats amazing. I'v worked out im 360 meters away from my cab (according to google maps) so hopefully I should be able to sync at the the full 80mbps or above smile

My Broadband Speed Test

Edited by Bobby_Valentino (Mon 14-Nov-11 19:18:07)

Standard User Zarjaz
(knowledge is power) Mon 14-Nov-11 20:22:36
Print Post

Re: From the JDSU.


[re: Bobby_Valentino] [link to this post]
 
I will, at some point, get an exact measurement of the D-side. I know it's 0.5 copper all the way, though much of it has been in the ground since 1967.

I suppose of more use to you guys might be to unlock the modem and see what it says, then a comparison might show something. But with the hacking process not reporting attenuation, it all gets a bit pointless.

Standard User epyon
(committed) Mon 14-Nov-11 20:37:42
Print Post

Re: From the JDSU.


[re: Bobby_Valentino] [link to this post]
 
Nice

i'm about 10 meters away

200mbps here we come laugh

BE*Unlimited 17959/1412Kbps
My Broadband Speed TestMy Broadband Speed Test
Standard User Bald_Eagle1
(learned) Mon 14-Nov-11 20:57:38
Print Post

Re: From the JDSU.


[re: Zarjaz] [link to this post]
 
In reply to a post by Zarjaz:
I will, at some point, get an exact measurement of the D-side. I know it's 0.5 copper all the way, though much of it has been in the ground since 1967.

I suppose of more use to you guys might be to unlock the modem and see what it says, then a comparison might show something. But with the hacking process not reporting attenuation, it all gets a bit pointless.


Hi Zarjaz,

The hacking process DOES show attenuation, but spread over the was 2 8c profile frequency band plans, but now 3 VDSL2 17a profile frequency band plans.

It is a known issue that BT's modem (& other broadcom based VDSL modems) does not report a "collective or average value" for attenuation.

We don't know the algorithm that a JDSU uses to report a combined value either.

What WOULD be really, really informative would be to be able to regularly compare unlocked modem stats against JDSU stats for the same connection.

Incidentally, nobody has been able/willing to confirm my own FTTC connection's D-side length with any certainty.
Is there any way that you are aware of whereby the actual cable route can be confirmed (from BT records for example)?

Paul.

Edited by Bald_Eagle1 (Mon 14-Nov-11 21:06:29)

Standard User Zarjaz
(knowledge is power) Tue 15-Nov-11 07:30:42
Print Post

Re: From the JDSU.


[re: Bald_Eagle1] [link to this post]
 
The records, in themselves, will show you where it goes, but won't provide an accurate length. For instance, every time your pair runs through a box with a joint in it, there might be a meter or so of slack on the cable, sometimes more.

Anyone thought of contacting JDSU to ask what algorithm they used ? Their base is in Chineham, just outside Basingstoke.

Standard User Bald_Eagle1
(learned) Tue 15-Nov-11 16:16:57
Print Post

Re: From the JDSU.


[re: Zarjaz] [link to this post]
 
In reply to a post by Zarjaz:
The records, in themselves, will show you where it goes, but won't provide an accurate length. For instance, every time your pair runs through a box with a joint in it, there might be a meter or so of slack on the cable, sometimes more.

Anyone thought of contacting JDSU to ask what algorithm they used ? Their base is in Chineham, just outside Basingstoke.


An engineer visited today & renewed approximately 100m of overhead cable, from 2 poles away, & also replaced the master socket.

He said my total D-side length was being reported from his JDSU as 1 km, with 0.9 km showing as the length from the cabinet to the pole from where he replaced the cabling.

He was really pushed for time, so was unfortunately unable to show me BT's Network Records for my D-side that may have confirmed the D-side route.
That's a great pity, as my D-side could take either of 2 routes, with probably 250m or so difference between them.

This re-cabling has produced a small speed improvement, & CRC errors have almost disappeared, but it is still a fair way below the original installation's actual download speeds of 32 - 33 Mb.
Downloads are currently running at 25.5 Mb or so, against a modem sync speed of 27.4 Mb.

He did say that the attenuation as reported by his JDSU was roughly comparable to the attenuation obtained from the modem ( 21 to 22 dB for DS band D1).
However, my attenuation for DS band D2 is 64.0 dB & is that high for for DS band D3 it is reported as N/A.

From your own experiences, what sort of actual download speeds would you say can be typically expected for various D-side lengths from say 0.6 km to 1.2 km, & what sort of JDSU DS attenuation value readings would be reported?


Paul.
Standard User reddev86
(regular) Tue 15-Nov-11 20:01:30
Print Post

Re: From the JDSU.


[re: Bald_Eagle1] [link to this post]
 
Unfortunately the day I had FTTC installed, I was at work, and SWMBO was here instead. So I never got to ask him for JDSU stats.

I've tried to estimate my line length as best as possible. I'm 550m away from the cabinet going by the BT access covers along the footpaths, so this is the shortest possible length it could be. If it wraps around a couple of streets first, it could be considerably longer.

Add that to the fact that my line is aluminium, and the fact that plenty of others are on my cabinet (my cabinet is currently out of capacity), I was pleasantly surprised to sync at around 35Meg on 8c, I'm hoping that I might get a couple of extra meg when I switch over to 17a, possibly even hitting the 40Meg ceiling.

FTTC via Plusnet Fibre Extra Pro
33mbit down, capped to 2Mbit up
NILN exchange - 550m from cabinet
Netgear WNR1000
Standard User BusError
(member) Wed 16-Nov-11 14:24:21
Print Post

Re: More FTTC line stats


[re: sean2003] [link to this post]
 
Here are mine. I'm about 100m from the cabinet. Still on 8c, but it looks like might be maxing it up easily with the switch to 17.

Text
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Retrain Reason: 0
Max:    Upstream rate = 17411 Kbps, Downstream rate = 48624 KbpsPath:   0, Upstream rate = 9995 Kbps, Downstream rate = 39999 Kbps
 Discovery Phase (Initial) Band Plan
US: (0,95) (696,1183) DS: (32,687) (1192,1627) 
Medley Phase (Final) Band PlanUS: (0,95) (696,1183) 
DS: (32,687) (1192,1627)        VDSL Port Details       Upstream        Downstream
Attainable Net Data Rate:      17411 kbps         48624 kbpsActual Aggregate Tx Power:    -  22.6 dBm           7.0 dBm
============================================================================  VDSL Band Status        U0      U1      U2      U3      D1      D2      D3
  Line Attenuation(dB):  2.4     9.4      N/A     N/A    5.1     11.6     N/A   Signal Attenuation(dB):  0.0     8.4      N/A     N/A    5.1     11.6     N/A   
        SNR Margin(dB):  21.9    21.9     N/A     N/A    12.1    11.9     N/A            TX Power(dBm): -33.9   -22.9     N/A     N/A    4.9     2.8      N/A
Standard User nalla
(member) Wed 16-Nov-11 15:47:31
Print Post

Re: Now on 17a


[re: reddev86] [link to this post]
 
yeah but my max attainable rate is some 14 meg more than my actual rate, oh and by the way my snr is 10.5.

edit - ah no tell a lie my max attainable has just gone up to 51mbp/s, but my sync has stayed the same ( 32mbps ), oh well not that im unhappy with my speeds.

Edited by nalla (Wed 16-Nov-11 15:55:15)

Standard User burakkucat
(committed) Wed 16-Nov-11 18:12:29
Print Post

Re: Now on 17a


[re: nalla] [link to this post]
 
It might be advantageous to reboot the HG612 (during daylight hours) and see if things then improve. From Bald_Eagle1's experiences, a modem reboot is sometimes required in that situation.

-----------------------------------------------------

100% Linux and, previously, Unix.
Standard User nalla
(member) Wed 16-Nov-11 18:18:55
Print Post

Re: Now on 17a


[re: burakkucat] [link to this post]
 
yeah i already did, thats when the max attainable went up to 51***, but the sync stayed the same.
Standard User reddev86
(regular) Wed 16-Nov-11 23:12:19
Print Post

Re: Now on 17a


[re: nalla] [link to this post]
 
Line switched to 17a about 2am this morning...

Before...

Max: Upstream rate = 15195 Kbps, Downstream rate = 34616 Kbps
Path: 0, Upstream rate = 1997 Kbps, Downstream rate = 34699 Kbps

VDSL Band Status U0 U1 U2 U3 D1 D2 D3
Line Attenuation(dB): 7.2 38.4 N/A N/A 17.3 48.4 N/A

Signal Attenuation(dB): 8.1 37.6 N/A N/A 17.3 48.4 N/A

SNR Margin(dB): 26.8 26.6 N/A N/A 6.0 5.8 N/A

And after....

# xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Max: Upstream rate = 7154 Kbps, Downstream rate = 52176 Kbps
Path: 0, Upstream rate = 1997 Kbps, Downstream rate = 39999 Kbps

============================================================================
VDSL Band Status U0 U1 U2 U3 D1 D2 D3
Line Attenuation(dB): 7.2 41.1 59.0 N/A 18.3 50.6 0.1

Signal Attenuation(dB): 6.1 40.7 N/A N/A 18.3 50.6 N/A

SNR Margin(dB): 18.2 18.2 N/A N/A 12.2 12.1 N/A

So it looks like my downstream has benefited from the change to band plan 998, but my attainable upload has suffered as a result.

Nevertheless, I'm pretty pleased that the line should be capable of approx 50Meg down and 7Meg up laugh

FTTC via Plusnet Fibre Extra Pro
DS: 39999 US: capped to 2000
NILN exchange - 550m from cabinet
Netgear WNR1000
Standard User Yerman164
(learned) Thu 17-Nov-11 15:40:34
Print Post

Re: Now on 17a


[re: reddev86] [link to this post]
 
I finally got round to unlocking my modem. Quite pleased with the stats considering my line is at least 400m.

Status: Showtime
Retrain Reason: 0
Max: Upstream rate = 28005 Kbps, Downstream rate = 80036 Kbps
Path: 0, Upstream rate = 10000 Kbps, Downstream rate = 39998 Kbps

Link Power State: L0
Mode: VDSL2 Annex B
VDSL2 Profile: Profile 17a
TPS-TC: PTM Mode
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 17.8 22.2
Attn(dB): 0.0 0.0
Pwr(dBm): 13.1 6.9
Standard User Alnath
(fountain of knowledge) Fri 18-Nov-11 14:40:31
Print Post

Re: More FTTC line stats


[re: mr_bean] [link to this post]
 
Just unlocked my modem, in a bit of a rush and i dont know what proile i am on currently.

Stats were:

sync of 39999 down 9999 up
max attainable 53.4Mbit
SNR 16db
Standard User burakkucat
(committed) Fri 18-Nov-11 19:03:23
Print Post

Re: More FTTC line stats


[re: Alnath] [link to this post]
 
The output, returned by an xdslcmd info --show command line, will clearly say "Profile . . . ".

-----------------------------------------------------

100% Linux and, previously, Unix.
Standard User Alnath
(fountain of knowledge) Sat 19-Nov-11 10:40:04
Print Post

Re: More FTTC line stats


[re: burakkucat] [link to this post]
 
As i said i was in a rush, i just used the modems web interface.
Standard User sparky76
(member) Sat 19-Nov-11 14:14:27
Print Post

Re: More FTTC line stats


[re: Alnath] [link to this post]
 
Managed to get into mine this morning after having it installed Thursday..

Not bad considering the checker estimated at 17.8Mbps..

Asked engineer for line legth to cabinet but didnt have his tester?? Going by road, length is at least 650m, he reckoned about 850m off the top of his head after doing two others in my street...


# xdslcmd info --show
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Max: Upstream rate = 7488 Kbps, Downstream rate = 41120 Kbps
Path: 0, Upstream rate = 7480 Kbps, Downstream rate = 39999 Kbps

Link Power State: L0
Mode: VDSL2 Annex B
VDSL2 Profile: Profile 17a
TPS-TC: PTM Mode
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 6.6 6.0
Attn(dB): 0.0 0.0
Pwr(dBm): 12.1 4.3
Standard User burakkucat
(committed) Sat 19-Nov-11 18:15:35
Print Post

Re: More FTTC line stats


[re: Alnath] [link to this post]
 
In reply to a post by Alnath:
As i said i was in a rush, i just used the modems web interface.
Ah . . . Have you now been able to look?

-----------------------------------------------------

100% Linux and, previously, Unix.
Standard User Alnath
(fountain of knowledge) Sun 20-Nov-11 00:34:54
Print Post

Re: More FTTC line stats


[re: burakkucat] [link to this post]
 
No mate its the weekend and beer and a right old knees up were beckoning lol

Come monday when the mist has lifted ill look laugh
Standard User ByteTraveller
(newbie) Sun 20-Nov-11 13:03:22
Print Post

Re: More FTTC line stats


[re: Alnath] [link to this post]
 
I have unlocked the 'modem', and have the following stats on profile 17a:

Text
1
23
45
67
89
1011
1213
1415
1617
1819
2021
22
# xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY statusStatus: Showtime
Retrain Reason: 0Max:    Upstream rate = 9217 Kbps, Downstream rate = 49816 Kbps
Path:   0, Upstream rate = 9113 Kbps, Downstream rate = 39997 Kbps 
Discovery Phase (Initial) Band PlanUS: (0,95) (868,1207) (1972,2783) 
DS: (32,859) (1216,1963) (2792,3939) Medley Phase (Final) Band Plan
US: (0,95) (868,1207) (1972,2783) DS: (32,859) (1216,1963) (2792,3939) 
       VDSL Port Details       Upstream        DownstreamAttainable Net Data Rate:       9217 kbps         49816 kbps
Actual Aggregate Tx Power:        5.8 dBm          11.9 dBm============================================================================
  VDSL Band Status        U0      U1      U2      U3      D1      D2      D3  Line Attenuation(dB):  5.9     32.4    48.9     N/A    15.2    40.5    63.0   
Signal Attenuation(dB):  11.2    31.4    47.9     N/A    15.2    40.5    63.0           SNR Margin(dB):  6.3     6.4     6.3      N/A    10.4    10.4    0.0    
         TX Power(dBm): -4.1    -12.7    5.3      N/A    9.7     7.8    -15.5


While its a wonderful line compared to the ADSLMax one I had, I am disappointed that I will not be able to keep up with the technology's potential WRT upload bandwidth. I don't care much about download bandwidth, its upload thats particularly rare - it would be pretty awesome if you could reallocate some of the bins to upload...

I have changed the graphing script to cope with profile 17a (only <2000 bins are part of 8c, so I upped the scales to 4100), here are my line stats: http://mg.wandborg.se/mgoblin_media/media_entries/4e...

Not sure what to make of it, other than the bins for the 3rd 'bandwidth' are almost completely unused (perhaps thats the 'U3' band in the text stats?).

ZeN / Zen Fibre Office Plus (VDSL2)
Standard User Bald_Eagle1
(learned) Sun 20-Nov-11 16:14:33
Print Post

Re: More FTTC line stats


[re: ByteTraveller] [link to this post]
 
In reply to a post by ByteTraveller:
I have changed the graphing script to cope with profile 17a (only <2000 bins are part of 8c, so I upped the scales to 4100)
Not sure what to make of it, other than the bins for the 3rd 'bandwidth' are almost completely unused (perhaps thats the 'U3' band in the text stats?).


& here are mine:-
Line Stats 20/11/2011

& also SNRM etc.

I have been messing with Windows batch files (not quite ready for release yet), but I believe the updated Linux script is about to be released in the usual location.


Paul.
Standard User Trancetek
(newbie) Sun 20-Nov-11 19:38:06
Print Post

Re: More FTTC line stats


[re: Bald_Eagle1] [link to this post]
 
Hi! Is that stats are good ? It is possible to get 100Mb in future?

# xdslcmd info --show
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Max: Upstream rate = 37753 Kbps, Downstream rate = 108292 Kbps
Path: 0, Upstream rate = 10000 Kbps, Downstream rate = 39999 Kbps

Link Power State: L0
Mode: VDSL2 Annex B
VDSL2 Profile: Profile 17a
TPS-TC: PTM Mode
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 26.0 24.9
Attn(dB): 0.0 0.0
Pwr(dBm): 12.8 -2.5
Standard User Trancetek
(newbie) Sun 20-Nov-11 19:41:43
Print Post

Re: More FTTC line stats


[re: Trancetek] [link to this post]
 
Why All dns adn gateway are different> It's BT VPN ?

Connection Name IP Address Subnet Mask Default Gateway
ptm1.101
ptm1.301 10.107.176.252 255.255.254.0 10.107.176.1

DNS Information
Help
Connection Name Primary DNS Secondary DNS
ptm1.101
ptm1.301 10.160.170.232 10.160.170.231

Edited by Trancetek (Sun 20-Nov-11 19:42:19)

Standard User lockyatlrg
(fountain of knowledge) Sun 20-Nov-11 20:16:14
Print Post

Re: More FTTC line stats


[re: Trancetek] [link to this post]
 
The best I have seen, I didn't think 17a went over 100mbit mark?

BT Infinity
ROUTER:-Netgear WNDR37AV
JDSU Stats
Sync 39999D 9995U
Attenuation: 9.6 SNR: 11.4
Line Length 300meters
Standard User Trancetek
(newbie) Sun 20-Nov-11 20:42:41
Print Post

Re: More FTTC line stats


[re: lockyatlrg] [link to this post]
 
I change front place on adsl nation I don't use the phone so I don't need any telephone filters.I'ts look like big improvement smile
Standard User lockyatlrg
(fountain of knowledge) Sun 20-Nov-11 23:49:33
Print Post

Re: More FTTC line stats


[re: Trancetek] [link to this post]
 
I very much changing filters or have no filters would make much difference, you are close to the cab and I would say a sub 100meter line.

BT Infinity
ROUTER:-Netgear WNDR37AV
JDSU Stats
Sync 39999D 9995U
Attenuation: 9.6 SNR: 11.4
Line Length 300meters
Standard User Alnath
(fountain of knowledge) Mon 21-Nov-11 11:29:10
Print Post

Re: More FTTC line stats


[re: burakkucat] [link to this post]
 
In reply to a post by burakkucat:
In reply to a post by Alnath:
As i said i was in a rush, i just used the modems web interface.
Ah . . . Have you now been able to look?


To my eternal shame i cant get putty to do owt, i log in to the router then i can get no further.
Standard User burakkucat
(committed) Mon 21-Nov-11 14:53:13
Print Post

Re: More FTTC line stats


[re: Alnath] [link to this post]
 
In reply to a post by Alnath:
To my eternal shame i cant get putty to do owt, i log in to the router then i can get no further.
Once logged in with user name admin and password admin, you should see a ATP> prompt.

Obtain a busy-box shell, by typing sh and press the Enter key. You should now see a # prompt. At that shell prompt, you will be able to enter the various xdslcmd commands. Start with xdslcmd --help.

When done, exit the busy-box shell with a Ctrl-D or exit. Then exit from ATP> back to PuTTY.

-----------------------------------------------------

100% Linux and, previously, Unix.
Standard User WWWombat
(committed) Mon 21-Nov-11 17:40:18
Print Post

Re: More FTTC line stats


[re: lockyatlrg] [link to this post]
 
Look at figure 5 on this ericsson PDF on vectoring.

The graph shows performance on the 17a profile, with & without crosstalk, and with both crosstalk and vectoring.

That pretty much shows that 17a will top out at 100Mbps, for the shortest lines, with crosstalk present (ie realistic, with other subscribers). But without crosstalk, the actual bandwidth seems to get as high as 170Mbps.

Figure 6 hits a top speed of 100Mbps, but the write-up shows the test equipment hardware they used in that test is the thing that limits throughput.
Standard User Alnath
(fountain of knowledge) Mon 21-Nov-11 18:26:31
Print Post

Re: More FTTC line stats


[re: burakkucat] [link to this post]
 
In reply to a post by burakkucat:
In reply to a post by Alnath:
To my eternal shame i cant get putty to do owt, i log in to the router then i can get no further.
Once logged in with user name admin and password admin, you should see a ATP> prompt.

Obtain a busy-box shell, by typing sh and press the Enter key. You should now see a # prompt. At that shell prompt, you will be able to enter the various xdslcmd commands. Start with xdslcmd --help.

When done, exit the busy-box shell with a Ctrl-D or exit. Then exit from ATP> back to PuTTY.


You are a star, thank you.

# xdslcmd info --show
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Max: Upstream rate = 14999 Kbps, Downstream rate = 52156 Kbps
Path: 0, Upstream rate = 9995 Kbps, Downstream rate = 39999 Kbps

Link Power State: L0
Mode: VDSL2 Annex B
VDSL2 Profile: Profile 8c
TPS-TC: PTM Mode
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 15.3 11.9
Attn(dB): 0.0 0.0
Pwr(dBm): 9.2 -23.5
Standard User burakkucat
(committed) Mon 21-Nov-11 18:44:44
Print Post

Re: More FTTC line stats


[re: Alnath] [link to this post]
 
In reply to a post by Alnath:
You are a star, thank you.
wink
<snip>
Max: Upstream rate = 14999 Kbps, Downstream rate = 52156 Kbps
Path: 0, Upstream rate = 9995 Kbps, Downstream rate = 39999 Kbps
<snip>
VDSL2 Profile: Profile 8c
<snip>
From that we can see that you are still on the original 8c profile but, due to a short D-side pair, you are seeing effectively the full 40/10 Mbps. Once on profile 17a and with the cap removed you probably will have excellent down- & up-stream speeds.

-----------------------------------------------------

100% Linux and, previously, Unix.
Standard User Bald_Eagle1
(learned) Mon 21-Nov-11 22:34:26
Print Post

Re: More FTTC line stats


[re: burakkucat] [link to this post]
 
Hi All,

This is possibly the wrong thread, but it IS related to the Huawei HG612's line stats.

I am currently testing new scripts that continually poll the modem for its SNRM, sync, error count etc. & converting the stats into graphs.

I am a Windows user so am trying to do all this via a comination of Windows batch files & Linux scripts.

I have been hervesting the mosem's data every 2 minutes by running a batch file via Windows Task Scheduler.

It works, but annoyingly pops up a CMD window every 2 minutes.
I think I have exhausted every avenue to do this in the background to no avail.

I found a good Windows cron program that does the trick (z-cron), but only every 5 minutes.
I really need to obtain the data every minute (or less) to make it truly meaningful.

FYI, just to loosely stay on topic, example graphs for my own connection can be seen here:-

Example graphs

Do any of you know how I can get Windows to do this silently, or point me toward some FREE software that will do it for me?

Paul.
Standard User BatBoy
(legend) Mon 21-Nov-11 22:44:08
Print Post

Re: More FTTC line stats


[re: Bald_Eagle1] [link to this post]
 
You mean via plink or extraputty, for example?



______________________________________________________________________________. __________________
Standard User Bald_Eagle1
(learned) Mon 21-Nov-11 22:52:54
Print Post

Re: More FTTC line stats


[re: BatBoy] [link to this post]
 
In reply to a post by BatBoy:
You mean via plink or extraputty, for example?


No, I have tried Plink, but can't automate the login when using the HG612 (but that's a different matter).

What I am looking for is a task scheduler that can run any program or batch file silently at predetermined intervals of 1 minute or less.
I am currently accessing the modem directly with no need to log into it at all (via a Windows version of cURL).

Using cURL, I am accessing various hidden modem URL's to get all the data for the stuff you can see in the WAN webpage.

Paul.
Standard User BatBoy
(legend) Mon 21-Nov-11 22:58:24
Print Post

Re: More FTTC line stats


[re: Bald_Eagle1] [link to this post]
 
Use the Start command to run a bat file minimised - start /min file.b