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Standard User BuckleZ
(fountain of knowledge) Sat 14-Apr-12 18:19:01
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FTTC DLM after No Dial Tone Fault


[link to this post]
 
I had a line fault yesterday which resulted in No Dial Tone.

During this my Max Attainable rate on the modem fell from 100mb+ down to 40ish.


The PSTN fault is now resolved and the modem stats are below: Anyone know how long before it will creep upto full sync?

http://i40.tinypic.com/2a7es74.png

Standard User BuckleZ
(fountain of knowledge) Sat 14-Apr-12 23:51:07
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Re: FTTC DLM after No Dial Tone Fault


[re: BuckleZ] [link to this post]
 
Guessing nobody knows how long it takes to move back up? Wasn't it like 72hrs with ADSL that the IP Profile would creep back up?

Edited by BuckleZ (Sat 14-Apr-12 23:52:53)

Standard User uno
(fountain of knowledge) Sat 14-Apr-12 23:53:42
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Re: FTTC DLM after No Dial Tone Fault


[re: BuckleZ] [link to this post]
 
Up to 5 days on ADSL (Max) but much quicker on ADSL2+ and FTTC.

Matt

-
uno Broadband
t: 0808 221 8642
Official Maidenhead, Milton Keynes & Manchester Speedtest.net Host

Edited by uno (Sat 14-Apr-12 23:54:18)


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Standard User Bald_Eagle1
(committed) Sun 15-Apr-12 00:14:34
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Re: FTTC DLM after No Dial Tone Fault


[re: BuckleZ] [link to this post]
 
54000 looks like DLM has capped your sync speed due to the "fault".

What sync speeds were you achieving previously?

DLM can be re-set, but currently it requires an engineer to be present at the master socket (no doubt so he can check the resulting sync speed).

Sometimes DLM can "stick" indefinitely.

If it hasn't improved within a few days, I would request your ISP to arrange an engineer visit, specifically to arrange re-setting a "stuck" DLM sync profile.

You could try rebooting the modem (once) which might force a re-sync at a higher speed.
Your SNRM suggests you should be able to achieve a somewhat higher speed (possibly the full 80Mb).
Standard User BuckleZ
(fountain of knowledge) Sun 15-Apr-12 00:19:08
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Re: FTTC DLM after No Dial Tone Fault


[re: Bald_Eagle1] [link to this post]
 
Used to always get the full 40mb, and attainable was always around the 100mb mark.

Lost dial tone on Friday, realised that my attainable rate had went down to 45Mb, and my sync was around 41mb. Engineer sorted the PSTN issue then Saturday morning.


Attainable rate is back to where it was but yeah looks like DLM has frozen me at 54,000kbps.


I'll give ie 72hrs. - might just email a few contacts in BT, their call centre staff are impossible to talk to.

Standard User Bald_Eagle1
(committed) Sun 15-Apr-12 00:24:06
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Re: FTTC DLM after No Dial Tone Fault


[re: BuckleZ] [link to this post]
 
54000 kbps = 54 Mb.

Are you on the 80/20 service (maybe even as a trialist)?
Standard User RobertoS
(sensei) Sun 15-Apr-12 00:39:13
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Re: FTTC DLM after No Dial Tone Fault


[re: Bald_Eagle1] [link to this post]
 
Must be. He has 20Mbps upstream sync.

I suggest a 1-minute turnoff of the modem, not a simple re-sync.

My broadband basic info/help site - www.robertos.me.uk
My domains,website and mail hosting - Tsohost. Internet connection - Plusnet Value Fibre.

"Where talent is a dwarf, self-esteem is a giant." - Jean-Antoine Petit-Senn.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Standard User BuckleZ
(fountain of knowledge) Sun 15-Apr-12 01:11:39
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Re: FTTC DLM after No Dial Tone Fault


[re: Bald_Eagle1] [link to this post]
 
I moved onto it as soon as it was released from BT Retail.... It was when the phone line when dead and problem started.

Standard User Bald_Eagle1
(committed) Sun 15-Apr-12 01:19:49
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Re: FTTC DLM after No Dial Tone Fault


[re: BuckleZ] [link to this post]
 
You say your sync speed went down to 45Mb, yet you aslo mentioned it was always 40Mb.

What is the highest sync speed you have achieved?
More than 54Mb?
Standard User BuckleZ
(fountain of knowledge) Sun 15-Apr-12 01:25:06
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Re: FTTC DLM after No Dial Tone Fault


[re: Bald_Eagle1] [link to this post]
 
I was on 40/10, always got full sync 39999kbps 9999kbps

When i got moved onto 80/20 product I noticed i was only getting 41meg on speedtests.


Looked at the modem, which showed: http://i44.tinypic.com/xfcocp.png

As you can see the attainable rate dropped right down etc.


Now the line is fixed, the attainable rate has went back to over 100mb, but the sync is 'stuck' at 54Mb... Just wondering if it usuallly unsticks easy enough or will i expect having a nightmare sorting it

Standard User Bald_Eagle1
(committed) Sun 15-Apr-12 01:45:36
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Re: FTTC DLM after No Dial Tone Fault


[re: BuckleZ] [link to this post]
 
Following repair work, my connection was stuck at 23.6Mb for 10 days until an engineer visited to request a DLM re-set while on site.

The re-set gave me a 35.3Mb sync speed, which is about the best my connection can achieve.

I had to keep pushing to get the re-set arranged though because:-

a) We are not supposed to be able to see our stats, instead relying on BT's IP Profile (which gives no indication of attainable speeds)
b) The fault threshold speeds are ridiculously low anyway (something like 12Mb or 15Mb for the 40Mb service & I'm not sure what it is for the 80Mb service but you can bet it will be less than 40Mb).
Standard User BuckleZ
(fountain of knowledge) Sun 15-Apr-12 01:48:21
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Re: FTTC DLM after No Dial Tone Fault


[re: Bald_Eagle1] [link to this post]
 
I'll give it 10days before I email Mr Livingstone. Anytime I have an issue like this... it gets sorted ASAP with one quick email to CEO office.


You'd think by now ISPs could reset DLM flip sake!

Standard User Bald_Eagle1
(committed) Sun 15-Apr-12 02:01:07
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Re: FTTC DLM after No Dial Tone Fault


[re: BuckleZ] [link to this post]
 
If you do end up emailing him, perhaps in passing you could ask for an explanation as to the reasoning behind supplying locked modems wink

Anyone could think BT were being intentionally secretive & deceitful........................

You could always ask him to put a "BT Approved" stamp on asbo's unlocking firmware smile
Standard User Moradin
(member) Sun 15-Apr-12 09:32:51
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Re: FTTC DLM after No Dial Tone Fault


[re: Bald_Eagle1] [link to this post]
 
ask him to put a "BT Approved" stamp on asbo's unlocking firmware


lol - he should hire him !

-----------------------------------------------
December PCP to postcode checker
https://www.google.com/fusiontables/DataSource?snapi...
My Broadband Speed Test
Standard User jchamier
(knowledge is power) Sun 15-Apr-12 12:18:35
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Re: FTTC DLM after No Dial Tone Fault


[re: BuckleZ] [link to this post]
 
In reply to a post by BuckleZ:
I'll give it 10days before I email Mr Livingstone. Anytime I have an issue like this... it gets sorted ASAP with one quick email to CEO office.


Given your an Infinity customer that makes sense.

The question about OpenReach's locked modem should probably go to Olivia Garfield surely? (CEO, OpenReach).

James - be* pro - 16.8 or 17.2mbps BQM
Still waiting for FTTC cabinet since Mar 2011- THFB PCP 5
Standard User lee111s
(regular) Sun 15-Apr-12 16:07:59
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Re: FTTC DLM after No Dial Tone Fault


[re: jchamier] [link to this post]
 
The circuit will be banded due to the line fault.

Emailing the CEO won't help in this instance as Openreach won't reset DLM like BT wholesale do on ADSL unless Openreach identify an issue caused by DLM.

Leave it as it is and the cap will be removed in time. How long is the question. VDSL DLM works completely different to ADSL DLM and it can take weeks for changes to be made, including interleaving and banded profiles.
Standard User BuckleZ
(fountain of knowledge) Sun 15-Apr-12 18:53:04
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Re: FTTC DLM after No Dial Tone Fault


[re: lee111s] [link to this post]
 
Thanks for the info! It has also added interleaving to the line again now too. Complete nightmare.

Standard User lee111s
(regular) Sun 15-Apr-12 19:10:11
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Re: FTTC DLM after No Dial Tone Fault


[re: jchamier] [link to this post]
 
In reply to a post by jchamier:
In reply to a post by BuckleZ:
I'll give it 10days before I email Mr Livingstone. Anytime I have an issue like this... it gets sorted ASAP with one quick email to CEO office.


Given your an Infinity customer that makes sense.

The question about OpenReach's locked modem should probably go to Olivia Garfield surely? (CEO, OpenReach).


It's got nothing to do with the Openreach VDSL modem. Liv would have it passed into BT Retail as Openreach don't deal with end users.
Standard User BuckleZ
(fountain of knowledge) Mon 16-Apr-12 16:41:42
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Re: FTTC DLM after No Dial Tone Fault


[re: lee111s] [link to this post]
 
Has anyone actually had DLM make positive changes to their line? for eg after a fault?

How long does it usually take?

Standard User maniac886
(member) Mon 16-Apr-12 17:39:50
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Re: FTTC DLM after No Dial Tone Fault


[re: BuckleZ] [link to this post]
 
I had a fault with my line last year and had DLM kick in numerous times. In my experience it took anytime between 7-10 days to go back to normal and my I.P profile to return to 38717 down. There was one time were it took over 2 weeks and I had to raise a fault to get an engineer to request the line to be reset.

BT Infinity
200m to cabinet
72.15MB/s down / 16.03MB/s up
Standard User BuckleZ
(fountain of knowledge) Mon 16-Apr-12 18:04:31
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Re: FTTC DLM after No Dial Tone Fault


[re: maniac886] [link to this post]
 
I'll give it 14days... speedtests are topping 20meg at the moment, as interleaving has been put on to the highest level and DLM has capped my line at 54000kbps

Even though the max attainable is showing still at 102Mb



DLM is a nightmare. ISPs need more control

Standard User maniac886
(member) Mon 16-Apr-12 18:26:34
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Re: FTTC DLM after No Dial Tone Fault


[re: BuckleZ] [link to this post]
 
I did find that on a couple of occasions I had to reset the OR modem for the I.P profile to go back to normal. If you do consider doing this I would wait a week otherwise the reset may be seen as a fault.

BT Infinity
200m to cabinet
72.15MB/s down / 16.03MB/s up
Moderator billford
(moderator) Mon 16-Apr-12 19:17:52
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Re: FTTC DLM after No Dial Tone Fault


[re: maniac886] [link to this post]
 
In reply to a post by maniac886:
I would wait a week otherwise the reset may be seen as a fault.
Unlikely.

Three of four times an hour might be chancing your luck (though the official figure is rumoured to be ten), but a lot of people would be delighted at one disconnect a week!


edit- Also don't forget that a lot of people turn their modems and routers off every night.

Bill
[email protected] __________________Planes and Boats and ... __________________BQM

Edited by billford (Mon 16-Apr-12 19:20:51)

The author of the above post is a thinkbroadband moderator but it does not constitute an official statement on behalf of thinkbroadband.
Standard User maniac886
(member) Mon 16-Apr-12 19:52:14
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Re: FTTC DLM after No Dial Tone Fault


[re: billford] [link to this post]
 
My V1 modem has done surprisingly well, I don't think I have switched mine off for 6 months!

BT Infinity
200m to cabinet
72.15MB/s down / 16.03MB/s up
Moderator billford
(moderator) Mon 16-Apr-12 20:02:48
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Re: FTTC DLM after No Dial Tone Fault


[re: maniac886] [link to this post]
 
Mine suffered the indignity of a power cycle about a month ago... when I accidentally knocked the power plug out frown

Otherwise like you- my V1 is still going strong after 18 months (though with occasional switching off). It runs a touch warmer at 80/20 than it did on 40/10 but still no more than tepid.

Nobody has tried to update it yet*, and I'm sure as hell not going to remind them- if it ain't broke, don't fix it!


* Fingers crossed.

Bill
[email protected] __________________Planes and Boats and ... __________________BQM
The author of the above post is a thinkbroadband moderator but it does not constitute an official statement on behalf of thinkbroadband.
Standard User maniac886
(member) Mon 16-Apr-12 20:09:50
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Re: FTTC DLM after No Dial Tone Fault


[re: billford] [link to this post]
 
Same here, I have not received the dreaded letter from Kelly Communications, I am hoping to put my replacement off for as long as possible or until my current modem dies!

BT Infinity
200m to cabinet
72.15MB/s down / 16.03MB/s up
Standard User RobertoS
(sensei) Mon 16-Apr-12 21:44:05
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Re: FTTC DLM after No Dial Tone Fault


[re: billford] [link to this post]
 
In reply to a post by billford:
Three of four times an hour might be chancing your luck (though the official figure is rumoured to be ten)
?
Where's that from Bill?

I agree it was set at 10 in the early days of ADSL Max, not rumoured but documented in a SIN at the time, and we have never seen any official variation from that, but that refers to the BT Wholesale ADSLx DLM. The Openreach one is, as you know, completely different, and managed to wake up the daft people maintaining the WBC one, though not the IPStream one.

I haven't seen anything giving a comparable figure for the OR one.

My broadband basic info/help site - www.robertos.me.uk
My domains,website and mail hosting - Tsohost. Internet connection - Plusnet Value Fibre.

"Where talent is a dwarf, self-esteem is a giant." - Jean-Antoine Petit-Senn.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Moderator billford
(moderator) Mon 16-Apr-12 22:14:02
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Re: FTTC DLM after No Dial Tone Fault


[re: RobertoS] [link to this post]
 
In reply to a post by RobertoS:
Where's that from Bill?
I honestly can't remember, it's not even impossible that I'm getting confused with the old BTw ADSLx one crazy

But even if the number is wrong, I think the principle is sound- it'll take a lot more than one disconnect a week to register as a fault!

IIRC, shortly after I got FTTC, I was playing around and did several modem restarts in a short period without the DLM throwing its toys out of the pram. I'm not sure of how many and whether the DLM has changed since then (it would have been well over a year ago), but there would have been at least two or three within an hour.

Bill
[email protected] __________________Planes and Boats and ... __________________BQM
The author of the above post is a thinkbroadband moderator but it does not constitute an official statement on behalf of thinkbroadband.
Moderator billford
(moderator) Mon 16-Apr-12 22:31:07
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Re: FTTC DLM after No Dial Tone Fault


[re: maniac886] [link to this post]
 
In reply to a post by maniac886:
I am hoping to put my replacement off for as long as possible or until my current modem dies!
I've seen the Kelly vans around here, but I've just thought- it may be that they think I've already got a new one.

A while back (but before the mass swap-out started) my ISP had to arrange an engineer visit 'cos I'd lost sync. He turned up with a new modem as that was the usual reason, but his test kit couldn't get sync either so that wasn't the problem... turned out the DSLAM in the cabinet had fallen over.

I suggested he didn't bother to swap the modem as there was nothing wrong with it and he was agreeable, but it's possible it still got logged as a swap-out. Either way I'm keeping schtum grin

Bill
[email protected] __________________Planes and Boats and ... __________________BQM
The author of the above post is a thinkbroadband moderator but it does not constitute an official statement on behalf of thinkbroadband.
Standard User BuckleZ
(fountain of knowledge) Thu 19-Apr-12 15:38:12
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Re: FTTC DLM after No Dial Tone Fault


[re: BuckleZ] [link to this post]
 
Well the interleaving has came off itself this time, came down in 2 steps, from 27ms first hop to 17ms now back to 11ms


Hoping this 54,000 sync cap does the same soon.

Standard User BuckleZ
(fountain of knowledge) Sun 22-Apr-12 18:43:38
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Re: FTTC DLM after No Dial Tone Fault


[re: BuckleZ] [link to this post]
 
All resolved, interleaving off and getting full sync/ip profile.

http://www.speedtest.net/result/1909412330.png

smile Well happy DLM done it's job this time for me.

Standard User RobertoS
(sensei) Sun 22-Apr-12 19:08:00
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Re: FTTC DLM after No Dial Tone Fault


[re: BuckleZ] [link to this post]
 
The OR DLM does seem quite well-engineered.

My broadband basic info/help site - www.robertos.me.uk
My domains,website and mail hosting - Tsohost. Internet connection - Plusnet Value Fibre.

"Where talent is a dwarf, self-esteem is a giant." - Jean-Antoine Petit-Senn.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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