LLU Line Underperforming?

Hi
I've just had my line regraded from 20CN ADSL to ADSL2+ LLU through a TalkTalk reseller.

My previous adsl stats were 21.5db attenuation and a stable 8.1snr.
With these figured I would have expcted around 19000kbps sync going off the kitz and farina checkers.

My current stats are:
ADSL Link Downstream Upstream
Connection Speed 15897 kbps 1022 kbps
Line Attenuation 24.5 db 14.9 db
Noise Margin 6.1 db 9.3 db

This seems a bit on the low side? My snr is around 6.4 most of the time but varies between 5.8 and 6.7 depending on time of day.

Is there some sort of line management on the talktalk llu stuff even through a reseller? the DMT tool shows line line as having 64 depth interleaving on too, will this affect sync speed? Also - I seem to remember that the target margin in 9db - maybe this is not helping either?

I should also point out that my router is plugged directly in to the nte5 socket which no extensions.

Any suggestions are most welcome!

line attenuation jumps around 4-5db when switching to adsl2/+

my line attenuation is 25.5 and i get around 15800 sync speed so i think you're line is performing just fine.

Hi
Yes - Im aware that attenuation jumps by about 3db but the checkers use your ADSL1 attenuation to estimate your ADSL2+ sync. at the attenuation i was at and even now I should be syncing higher. Heck I've seen people with an origional attenuation of 28db getting better sync then me.

Well to maximise performance matching router chipset and DSLAM

it could give a massive boost 2-3mbps is possible though its hard to do it sometimes

my DSLAM is broadcom and matching it with a broadcom gets me around 1800kbps extra.

Though every line is different in perfect conditions you would be syncing at 18+ Mbps

Edited by epyon (Wed 14-Mar-12 16:15:44)

Yes, you're right! You should be syncing at 18-19 Meg on 6 dB NM.

I thought so too - so far I've tried a DG834GT and a Tomson 585v6. Any ideas?

Is there some sort of line management on the talktalk llu stuff even through a reseller?

Depends on who the reseller is.

. . .

No, but I'm getting 19 Meg with a DG834GT on 26 dB attn but with 3 dB NM Fast path. So you should be able to get similar on lower attn, but higher NM.

Have you got stats from test socket? Removed ring wire, checked extensions, swapped filters ... ?

In reply to a post by XRaySpeX:

No, but I'm getting 19 Meg with a DG834GT on 26 dB attn but with 3 dB NM Fast path. So you should be able to get similar on lower attn, but higher NM.

Have you got stats from test socket? Removed ring wire, checked extensions, swapped filters ... ?

Reseller is Vivacity

When the line was enabled it has (and still has for the moment) the maximum interleaving on - I know on ADSL1 this affected your max sync - not sure if it applies here tho.

My Router is plugged in to the BT master socket - no extensions. Have tried a DG834GT and 585v6.

No extensions to check - also tried two other filters.

Is it into the master with just the short ADSL cable, or are you using a plug-in phone extension between the two?

Hi
Its Master socket >filter > router rj11 cable > router.

I never have a a phone connected either - but I just borrowed a corded one just to test and when its plugged in I can hear a faint crackling/shhh sort of noise. Is a little noise normal or should there be absolutely no noise on the line? Would noise like that affect the dsl side?

Edited by deleted (Wed 14-Mar-12 17:57:55)

Ideally, corded phone >> test socket, revealed when you remove the faceplate, then dial 17070 option 2. Should be silent apart from the girl telling you it is the Quiet Line test.

Hi
So I tested with the phone straight in to the test socket - can still hear faint crackling.
Tried router in there again and no change in line stats.

Did you do that quiet line test, or just normal dialling.

Quiet line and normal dialling.

The only way you're going to sync higher is to find more noise margin to use. You should try Routerstats to monitor the noise on the line and see if you can reduce it.

What are CRC and FEC and Error Seconds like?

About 1000 crc errors over the last 24 hours. 13 HEC and 107 ES

Batboy - I wonder if the noise I can hear on the line is killing my snr?

Edited by deleted (Wed 14-Mar-12 21:25:08)

Possibly, the problem is the frequencies DSL uses is the same as MW radio, so you can't hear them. But the phone should be completely quiet.

In reply to a post by huwwatkins:

Quiet line and normal dialling.

On the QLT there should be no "a faint crackling/shhh sort of noise". The difficulty is getting it to show up on an automated voice line test, or if you can still get BT people on the line that they can hear it.

In reply to a post by huwwatkins:

About 1000 crc errors over the last 24 hours. 13 HEC and 107 ES

Batboy - I wonder if the noise I can hear on the line is killing my snr?

Those are good figures. Just a correction of one of your posts earlier the Target margin on TT LLU is 6db not 9db.

Thanks - I was just going off what the tech support line told me.

I will phone Post Office who my voice line is with and report a fault.

Line Attenuation 24.5 db 14.9 db
Noise Margin 6.1 db 9.3 db


your noise margin is low for the length of your line.

I have 28db attenuation and get a better noise margin than you of 12db.

Thats because your sync speed is capped.

[cough]
There is no direct correlation between length of line and noise margin.

Unless you are on ADSL(1) with Zen, (I assume you are still with Zen), a noise margin of 12dB immediately after connecting is indicative of current or past fairly serious problems.

If you are on ADSL2+ your connection speed should be well in excess of 16Mbps. Are you, and is it? The speed test result in your sig indicates ADSL2+. You should be getting over 14Mbps on a speed test.

If it is lower, I think a thread of your own questioning it is indicated, as continung here would be poaching and also way off topic.

Edited by RobertoS (Wed 14-Mar-12 22:15:13)

surely it works the other way, sync speed is governed by line attenuation and noise margin +plus other factors...

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

SDSL StatusADSL Status Mode State
ADSL2+(G.992.5) SHOWTIME
Up Speed 1208000
Down Speed10776951
SNR Margin10
Loop Att.33


Here are my current stats, on Zen ADSL 2

you are correct Robertos, historically I had serious problems with the line. Think my target snr is still set at 12 thinking about it, maybe i could get this lowered now

Those are ADSL2+ stats not ADSL2. You should sync at 13Mbps. The missing 3Mbps is accounted for by your high noise margin.

Ta, i might call Zen tomorrow and see if there is anything they can do to improve things

As per BatBoy, only I think he is being a little conservative with his 13Mbps.

Unless you have ongoing problems 14Mbps or slightly higher connection should be possible. Your attenuation is 33dB, not the 28dB you stated earlier.

I repeat, this now needs to be a separate thread . It is nothing whatsoever to do with the OP's problem nor (I presume) with LLU.

Just to re-iterate - any noise what so-ever on the quiet line test is considered a fault? The wife can hear it too so its usually a good sign im not imagining things! I just don't want the engineer out just for him to say there is no fault.

Remember, audible noise should be reported as a voice fault to your phone line rental company. If that is BT I believe they now have an automated testing system you can trigger, but if that doesn't detect it I would try to get talking to someone, using the phone in the test socket. Do not mention any broadband issues!

That way you may get agreement that there is noise, and you should be safe.

In general, getting audible noise fixed is far easier than getting the associated broadband underperformance fixed, and does fix the broadband.

Cheers - my voice line is with the Post Office so I will give them a ring.

In reply to a post by huwwatkins:

This seems a bit on the low side? My snr is around 6.4 most of the time but varies between 5.8 and 6.7 depending on time of day.

Not really; I suspect your target SNR is 6db on the downlink.

I get similar on my BE line; the best sync I get is 17,000 very occasionally, and normally I'm at the 16,800 level as now. BE let me try 3db target SNR and my line sync's but there is enough noise I can't hold the sync for more than a couple of hours at best. The SNR will wander during the day by 0.5 at least, often more.

This is a Thomson TG585v7 connected to a BE/O2 DSLAM - so broadcom both ends.

Uptime: 3 days, 7:52:32
DSL Type: G.992.5 annex A
Bandwidth (Up/Down) [kbps/kbps]: 1,278 / 16,824
Data Transferred (Sent/Received) [kB/kB]: 0.00 / 0.00
Output Power (Up/Down) [dBm]: 10.0 / 18.5
Line Attenuation (Up/Down) [dB]: 13.5 / 24.0
SN Margin (Up/Down) [dB]: 7.5 / 6.5

Update: Phoned post office - they ran a remote line test and picked up what they called a 'disconnect' fault from that - not quite sure what that means?

Possibly 'HRdis' - a High Resistance Disconnect.

What does that mean?

Could be a disturbance to the connection somewhere on the line caused by any number of things that results in crackles etc. being heard during a quiet line test.

Hopefully OR will fix the problem for you, free of charge, if it's exchange side of the nte5 which seems very likely since you tested voice quality (quiet line test) via the test socket and the issue was also confirmed by your phone service provider.

In reply to a post by RobertoS:

Remember, audible noise should be reported as a voice fault to your phone line rental company. If that is BT I believe they now have an automated testing system you can trigger, but if that doesn't detect it I would try to get talking to someone, using the phone in the test socket. Do not mention any broadband issues!

That way you may get agreement that there is noise, and you should be safe.

In general, getting audible noise fixed is far easier than getting the associated broadband underperformance fixed, and does fix the broadband.

Don't wish to be negative here ,but when i had a PTSN fault which after several months became more persistent and louder , it even occurred during a call with BT it was so loud that it wiped out everything being spoken, they heard it too, but it counted for nothing,she still read out the warning that i could be charged the £130 fee , but as it was still intermittent i didn't take the chance, line eventually died completely so had an obvious fault ,

Edited by tommy45 (Thu 15-Mar-12 04:13:10)

Nice chap at the PO arrange an engineer for friday - said there was no need for him to visit my house and no mention of charges. I presume their automated tests are some sort of exchange based TDR test?

Out of interest here is my DMT info in case anyone spots anything - most of the ones I've seen dont have the depression in the middle from around tones 75-300.

My upstream sync also seems very low - i've seen stats for much longer lines with the same or better.

http://i42.tinypic.com/258qk34.jpg

Edited by deleted (Thu 15-Mar-12 18:21:23)

Looks like the frequency response of one of the cables is limited. Try different cables.

What does DMT look like immediately after a router reboot?

In reply to a post by BatBoy:

Looks like the frequency response of one of the cables is limited. Try different cables.

What does DMT look like immediately after a router reboot?

Hi
Im at work at the moment but will make up another rj11 cable and test when I get home

My line has completley lost sync now by the looks of it so hopefully this is BT openreach sorting the line fault.

Edited by deleted (Fri 16-Mar-12 11:19:40)

BT have fixed the line fault but if anything things are worse!

see here, this is right after a reboot

http://imageshack.us/photo/my-images/19/45084005.jpg


edit: new rj11 cable straight in to test socket

http://img11.imageshack.us/img11/5189/20456442.jpg

Now almost 5 meg adrift from where I should be!

Edited by deleted (Fri 16-Mar-12 18:30:08)

Did they check from the test socket in the nte5?

When I had an OR engineer called out to check my line late last year he started from the nte5 test socket then worked his way to the exchange via the cabinet etc. BTW he detected errors at the nte5 initially and found the problem to be at the exchange. However that was first reported by me as a broadband fault and not a voice fault but the two were eventually found to be related.

I started with the voice fault as I thought that would be simplest to sort. I may now have to raise a broadband fault - However , I am not sure how seriously my ISP will respond to something like this.

4M2 - they didn't come in to the house.

Edited by deleted (Fri 16-Mar-12 18:54:31)

Is the quiet line test definitely OK now?

If it is you might be struggling to get any action from your ISP regarding the broadband

Line seems quite now - just re synced at 14982 kbps

That DMT graph looks wrong though. You're losing a lot of speed in that middle dip.
Can you describe how the wiring comes in from outside?
What about extensions, alarms, sky boxes, etc?

Thanks for replying BatBoy.

BT line comes from the nearest pole - down the side of the house and through a hole in the wall straight in the back of the NTE5. Router is plugged directly in to that - no extensions alarms or sky box just this:

line in > NTE5 >filter > dsl cable > router.

Tried swapping the dsl filter and dsl cable as I mentioned before this made no difference.

Hopefully Vivaciti will have a look in here - my pings have gone through the roof since yesterday (anywhere between 60 and 300 to bbc.co.uk) and im struggling to hit 1meg down - maybe the two are related.

Edited by deleted (Fri 16-Mar-12 21:20:54)

I think, then, you have what you have

imo.

Edited by deleted (Fri 16-Mar-12 21:19:15)

Thanks BatBoy - I really hope not, I can walk to my exchange in about 5 minutes in pretty close!

These are my pings at the moment

Pinging bbc.co.uk [212.58.241.131] with 32 bytes of data:
Reply from 212.58.241.131: bytes=32 time=19ms TTL=245
Reply from 212.58.241.131: bytes=32 time=273ms TTL=245
Reply from 212.58.241.131: bytes=32 time=122ms TTL=245
Reply from 212.58.241.131: bytes=32 time=69ms TTL=245
Reply from 212.58.241.131: bytes=32 time=38ms TTL=245
Reply from 212.58.241.131: bytes=32 time=79ms TTL=245
Reply from 212.58.241.131: bytes=32 time=318ms TTL=245
Reply from 212.58.241.131: bytes=32 time=163ms TTL=245
Reply from 212.58.241.131: bytes=32 time=112ms TTL=245
Reply from 212.58.241.131: bytes=32 time=20ms TTL=245
Reply from 212.58.241.131: bytes=32 time=113ms TTL=245
Reply from 212.58.241.131: bytes=32 time=370ms TTL=245
Reply from 212.58.241.131: bytes=32 time=218ms TTL=245
Reply from 212.58.241.131: bytes=32 time=180ms TTL=245
Reply from 212.58.241.131: bytes=32 time=66ms TTL=245
Reply from 212.58.241.131: bytes=32 time=176ms TTL=245
Reply from 212.58.241.131: bytes=32 time=47ms TTL=245
Reply from 212.58.241.131: bytes=32 time=20ms TTL=245

Edited by deleted (Fri 16-Mar-12 21:30:54)

erm, that's no good. What I meant was, the problems are probably on the Openreach side, not your side.
Now, it could be anywhere from your master socket to the exchange, not forgetting the tie-pairs in the exchange.
Wanna ask your reseller to get the tie-pairs changed?

In reply to a post by BatBoy:

Wanna ask your reseller to get the tie-pairs changed?

Haha - I dont think most ISP's would know what a tie-pair was. What do you reckon my chances are?

Wells heres a brief look at what I am getting.

Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.

C:\Users\Cris>ping bbc.co.uk

Pinging bbc.co.uk [212.58.241.131] with 32 bytes of data:
Reply from 212.58.241.131: bytes=32 time=42ms TTL=244
Reply from 212.58.241.131: bytes=32 time=40ms TTL=245
Reply from 212.58.241.131: bytes=32 time=39ms TTL=245
Reply from 212.58.241.131: bytes=32 time=40ms TTL=245

Ping statistics for 212.58.241.131:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 39ms, Maximum = 42ms, Average = 40ms

C:\Users\Cris>
Looks like someone somewhere needs to wet the string for you.

Something is disturbing the adsl2+ frequencies because you had a good stable connection with adsl1.

I use a TT reseller (xilo/uno partial LLU) and pings to bbc.co.uk are 34ms, downstream sync 13901, atten 36.5, snr 6, throughput ~11300Kbps 24/7.

It's a shame you didn't get an OR SFI engineer to check for errors from your nte5 test socket because there is certainly something not quite right somewhere exchange side of your nte5.

Have opened a ticket or spoken to vivaciti about this lower than expected adsl+2 performance?

Just opened a ticket with Vivaciti and pointed them here. Hopefully they will come up good!

Just testing with a 3rd router I just remembered I have that doesnt have a broadcom chipset.

The 585 v6 should be good, I use a v7...

Can't even get sync at the moment!

Edited by deleted (Fri 16-Mar-12 23:00:35)

Settings you are using?

Hmmm - would seem that the DG834GT has stopped syncing - Now using the Tomson 585v6 and have hit new lows. Here are the stats

Link Information

Uptime: 0 days, 0:04:53

Modulation: G.992.5 annex A

Bandwidth (Up/Down) [kbps/kbps]: 1,023 / 14,152

Data Transferred (Sent/Received) [KB/KB]: 41.00 / 168.00

Output Power (Up/Down) [dBm]: 11.5 / 19.0

Line Attenuation (Up/Down) [dB]: 13.0 / 23.0

SN Margin (Up/Down) [dB]: 12.5 / 6.0

Vendor ID (Local/Remote): TMMB / BDCM

Loss of Framing (Local/Remote): 0 / 0

Loss of Signal (Local/Remote): 0 / 0

Loss of Power (Local/Remote): 0 / 0

Loss of Link (Remote): 0

Error Seconds (Local/Remote): 10 / 0

FEC Errors (Up/Down): 2,220 / 0

CRC Errors (Up/Down): 160 / 1

HEC Errors (Up/Down): 3,047 / 1



I spy with my little eye.....lots of errors.

Wouldn't worry about the errors just yet - I get those when the 585 v7 first establishes a connection to the TT kit at the exchange.

Downstream sync doesn't look that brilliant though considering your 23db attenuation...upstream sync looks fine...

Got another 834GT to play with.

This is the DMT graph

http://i43.tinypic.com/b7nwp5.jpg

Sync getting worse

Odd thing is - when I plugged the router in, it still had the previous owners user details in it. Oddly enough - it still connected but with a completley different IP address to my normal one - let me connect and browse. I didnt think this was supposed to happen?

What's that massive hole after 1966k? Have you got the router near a noise source, like a plasma tv or something?

Could you try the SNR Monitor?

That graph was taken in the living room - the only thing on was the router and laptop. I will try a re-sync and get some router stats for the next 24 hours.

Well that didnt go so well

http://i40.tinypic.com/2qxun15.jpg

My Router stats over the last 24 hours - I've included the interesting bits..

http://i42.tinypic.com/fwn5hc.jpg
http://i41.tinypic.com/r7897a.jpg
http://i44.tinypic.com/28018xc.jpg
http://i43.tinypic.com/rbmz9z.jpg
http://i40.tinypic.com/142a0kl.jpg

Doesnt look too bad to me apart from the odd blip?

Previous 15 minutes time = 15 min 0 sec
SF = 55360
CRC = 4621
LOS = 0
LOF = 0
ES = 679

Latest 15 minutes time = 7 min 19 sec
SF = 26969
CRC = 2282
LOS = 0
LOF = 0
ES = 363



Are those numbers quite high? ES dont look good

Edited by deleted (Sun 18-Mar-12 21:58:24)

ES - Error seconds - is high for 15 minutes.

Re your graohs in the previous post, the small blips look like phone calls? Normal. The big one in the final graph is a disconnection - can't tell much apart from that, what did the sync speed do at that point?

Sync speed stayed the same its still at 13987.

Latest:

Latest 15 minutes time = 2 min 40 sec
SF = 9874
CRC = 911
LOS = 0
LOF = 0
ES = 127
Previous 15 minutes time = 15 min 0 sec
SF = 55325
CRC = 4444
LOS = 0
LOF = 0
ES = 733

My SNR started about 8.8 at around 6pm and has sunk to around 7 now.

Edited by deleted (Sun 18-Mar-12 22:10:27)

I'd consider 1 ES in at least 1 min to be OK. You are getting 1 ES per 1.2 secs.

Oddly enough - its stopped now.

edit: had to resync as I was testing the phone in the test socket ( i think there is still a bit of noise on the line but its quite feint)

latest sync:
http://i39.tinypic.com/9itfgo.jpg

Edited by deleted (Sun 18-Mar-12 23:56:37)

Still getting lots of ES and CRC's according to the DMT tool and at around 4pm a loss of sync - re-sync to yet lower speed 13500 that wasn't initiated by me

What's the quiet line test like now?

Did you go back to using the 585 v6 router?

Got another DG834GT

Been monitoring the error rate, getting lots of spikes like this one - are they anything to be concerned about? ES are roughly the same

http://i39.tinypic.com/3537cb8.jpg

Had a voice engineer look at the line again today - noise has gone but till low sync. Am I right in thinking I need an SFI engineer to look at this?

What's the situation with your vivaciti ticket: has a line inspection by an OR SFI engineer been suggested by vivaciti on the basis of your low downstream sync? Plenty of dropped connections per day would certainly warrant a SFI check for sure�

Hi
I logged another call with PO on thursday as this was suggested to me that this was the way to go. BT did somthing on friday (dont know what) and any remaining noise on the line seems to have gone. Now either by luck of design the error rate for last night was well down and it held sync but the sync hasn't increased.

Vivaciti suggested raising the target snr to 9 - which would make sync worse .

These are my current tg585v7 stats (xilo/uno - TT partial LLU):

DSL Type: G.992.5 annex A

Bandwidth (Up/Down) [kbps/kbps]: 1.022 / 13.839

Data Transferred (Sent/Received) [kB/kB]: 0,00 / 2,00

Output Power (Up/Down) [dBm]: 12,0 / 19,5

Line Attenuation (Up/Down) [dB]: 20,5 / 37,0

SN Margin (Up/Down) [dB]: 10,5 / 6,0

With your downstream attenuation you should really be getting an extra 5Mbps on the downstream sync - vivaciti just talking about raising the sn margin (?) to 9dB does seem rather unhelpful...

Thanks! that certainly puts some context to it. Here is a map of me to the exchange with the likely routes I think my line takes. Big red box is exchange, small is me and black box is nearest cab.

I've been out walking just now and can find be manholes goes those two routes back to the exchange.

http://i41.tinypic.com/ddw7p.jpg

My neighbours adsl 1 stats for comparison

ADSL firmware version : A2pBT009c1.d17d
Connection mode : G.DMT
Type : Interleave
Noise margin (dB) : 10.4
Attenuation (dB) : 26.0
Attainable download rate (kbps) : 9376
ADSL status : Connected


I suspect he'd get more from ADSL2+ than me.

Well at the moment it is likely he is on 8128 or 7616kbps sync, but it would be useful to have one of them confirmed.

In reply to a post by huwwatkins:

I suspect he'd get more from ADSL2+ than me.

Possibly not because in your opening post you said that your previous adsl1 (?) downstream attenuation was 21.5dB...

Sorry - thought i had included that,its 7616k as he has interleaving on.

Figures taken from a 5 year old Orange box - so they might have been better with a different router.

Edited by deleted (Sun 25-Mar-12 22:18:34)

In reply to a post by huwwatkins:

Hi
I logged another call with PO on thursday as this was suggested to me that this was the way to go. BT did somthing on friday (dont know what) and any remaining noise on the line seems to have gone. Now either by luck of design the error rate for last night was well down and it held sync but the sync hasn't increased.

Vivaciti suggested raising the target snr to 9 - which would make sync worse .

Depends if raising the snr target was in response to the issue of errors or sync rate - if it was to get your errors down then it can be a good trade since high error rates really hurt streaming web content and you can have better performance in that area if you sacrifice some of the headline sync rate for overall stability with less errors.

Tweaking performance is more then just going after the highest raw sync rate possible, its about what works best for the user.

Edited by deleted (Mon 26-Mar-12 09:37:19)

You might be interested to know I'm in Llys Ardwyn on the same map on BT 21CN ADSL2+ (via AAISP) and have these stats reported on the modem:

noise margin upstream: 6 db
output power downstream: 21 db
attenuation upstream: 7 db

noise margin downstream: 6 db
output power upstream: 9 db
attenuation downstream: 17 db

And from BT, yesterday at 11am:

DSL Status Check Successful Circuit In Sync
BRAS=18180Kb/s FTR=2272Kb/s MSR=2272Kb/s ServOpt= I/L=O
Up Sync=1067Kb/s LoopLoss=7.8dB SNR=7dB ErrSec=0 HECErr=0 Cells=740569
Down Sync=20673Kb/s LoopLoss=17.6dB SNR=6.5dB ErrSec=0 HECErr=N/A Cells=1647134

speedtest

awoodland,

Nice numbers!!!

What modem/router are you using?

Zyxel P660-R, Firmware V3.40(ANZ.6). It's been incredibly reliable, an uptime of 7839:37:29 (H:M:S) which I think is the date of the last power cut.

Are you on Llys arwyn near llanbadarn road or further up toards the hospital?

By the back entrance up from Llanbadarn road.

In reply to a post by 4M2:

awoodland,

Nice numbers!!!

Agreed, but very strange MSR and FTR!

In reply to a post by awoodland:

By the back entrance up from Llanbadarn road.

Your line wont be that much shorter than mine then. Quite curious!

I just assumed MSR and FTR were perhaps misreported - wouldn't FTR be 70% of MSR normally or has that changed now with 21CN/ADSL2+?

It's 80%, (has been for a long time, I used to think it was 70% as well, so maybe it used to be), but those look like 2Mbps fixed. As though they never got reset. It would make sense for them to be the same on a fixed speed connection.

What throughput speed do you get awoodman please? What does the BT Performance Test give?

In reply to a post by RobertoS:

In reply to a post by 4M2:

awoodland,

Nice numbers!!!

Agreed, but very strange MSR and FTR!

It's still in the 10 day training period, so I think they're on defaults - the 21CN upgrade only went live last week AFAIK and I placed a manual regrade order before the bulk ones went through. (It hasn't had a single resync, it just went off for 60 seconds and came back up like that).

Hi,
Raising the SNR was to help improve the stability and try to get rid of the errors on the line, it would not have been to get a higher connection speed, I believe the advise was to get the snr up a notch until the phone line issue has been looked at then to drop it back down.

That makes total sense . A BT speed test would be interesting though, given your figures.

Edited by RobertoS (Mon 26-Mar-12 18:19:20)

I intentionally don't have any Java plugins for my browser installed so I can't report from the BT one or TBB one, but a "real world" test - 75 HTTP requests from a well connected Debian mirror got:

Fetched 234 MB in 2min 12s (1,768 kB/s)

Which is pretty good really. (The capitalisation of k,M and B is correct in that quote).

wget with the 200MB file reported:

2012-03-26 18:11:12 (2.08 MB/s) - `200MB.zip' saved [209715200/209715200]

.

Given how new the 21CN upgrade in this area is and the lack of bulk upgrades it's not unlikely that I have a whole VP to myself right now though.

In reply to a post by vivaciti:

Hi,
Raising the SNR was to help improve the stability and try to get rid of the errors on the line, it would not have been to get a higher connection speed, I believe the advise was to get the snr up a notch until the phone line issue has been looked at then to drop it back down.

I understand this and have updated the ticket.

In reply to a post by huwwatkins:

In reply to a post by awoodland:

By the back entrance up from Llanbadarn road.

Your line wont be that much shorter than mine then. Quite curious!

Since my line is presumably newer than yours (these flats have been flats for < 10 years) it's possible that you've got some far older copper with correspondingly old joints somewhere exchange side of the NTE, or even a segment of aluminium somewhere.

Those look OK, particularly the 200MB file one, showing 16Mbps or so. Your maximum is approaching 18Mbps.

If you have Flash installed then www.speedtest.net is useful.