MaxDsl Re-train following BT Fault

This is probably tempting fate but following a repair on my line by BT my line conditions are somewhat better than they were at the end of the Max Trial in May.

Because of the recent fault I have a Target SNM of 15 dB but have now synced at a minimum of 5728 for 72 hours with a total SNR variation of 2 dB and a minimum Margin of 14 dB.

These values are dramatically better than in the recent past with re-syncs into the hundreds per day and the speed stuck at 160 kb - when I was able to connect.

The BT Engineer who attended site suggested that BT would automatically re-train the line.

Any thoughts on whether this is likely to happen or given a decent time interval should I pursue this through my ISP.

There are suggestions that if I stay connected long enough it should happen anyway ?.

Edited by deleted (Sat 30-Sep-06 11:21:01)

The BT Engineer who attended site suggested that BT would automatically re-train the line.

Well it'll have to be automatic, because they sure as hell won't do it manually (I've been waiting three months for this).

There are suggestions that if I stay connected long enough it should happen anyway ?

Will need to be sync'd solid (no drops) for more than 10 days (14 days, for a one step drop, then 28 days for the next, has been mentioned on here, but I don't think that's official - otherwise my ISP would have simply said "wait 14 days" when I asked for my target to be lowered).
This is how long my last sync was, until I stupidly believed my ISP that BT had initiated retaining of my line (to pull the target SNR back down from 15db), and I should reboot my router to take advantage of the lower target.
Guess what? BT hadn't started retraining (why would they - lazy gob sh*tes), and now I've got another 10 days to wait until I'm back to where I was (before I believed some co*k & bull story about BT actually doing what an ISP asks).

In reply to:

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The BT Engineer who attended site suggested that BT would automatically re-train the line.

Well it'll have to be automatic, because they sure as hell won't do it manually (I've been waiting three months for this).

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What the engineer should have done, if he saw that he had significantly improved the stats, and that the quoted target snr was high, was to contact the powers that be and have the training period reset.

I hadn't thought through the implications of a supposed automatic re-train.

As you suggest you won't necessarily know anything about it until you re-sync to try and take advantage of a potential reduction in the SNM.
Do this prematurely and you go back to square one. Sort of catch 22.

It seems if I remain connected for 14 days I may see a reduction to 12 dB.

You refer to a possible further 28 days which I assume would start after you have re-synced to take advantage of the first drop in SNM.

That presumably might take me down to 9 dB.

Dread to think how long it could take to get back to 6 dB.

At the risk of preaching to the converted its a world apart from one loss of sync dropping your throughput immediately.

To make it worse it was in part a voice fault.
I would have been better off pursuing it as a voice fault and conserving my Target SNM by judicious powering down the Router which I had been doing previously.

BT don't take prisoners - What a mess !!!

I hesitate to mention this but since I'm using a Speedtouch 546 I could use DMT to lower my SNM to 10 dB.
No idea what the implications of this might be if I stayed connected for 14 days.
Might I still get a reduction of 3 dB in the Target SNM ?.

Edited by deleted (Sat 30-Sep-06 12:29:48)

Thanks Albertring - I would like to think this might be the case but not holding my breath.

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I hesitate to mention this but since I'm using a Speedtouch 546 I could use DMT to lower my SNM to 10 dB.

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Yes. That what I'm doing.

Thanks NormanB.

If you remain connected for not less than 14 days you are no doubt anticipating a reduction in the Target SNM following a re-sync. Hope it works out that way.

I am however concerned as to what might happen if I'm using DMT and BT do start a re-train.

I guess the initial Target SNM would be reduced from 6 dB and could complicate things somewhat.

As an afterthought:

Ade wrote: - 'BT had initiated retaining of my line (to pull the target SNR back down from 15db), and I should reboot my router to take advantage of the lower target'

The wording implies you had to re-sync to take advantage of the re-trial otherwise you would have sat on 15 dB.

This would reduce my concerns about using DMT to lower the SNM.

If a re-train was imminent/in progress it would simply mean using DMT to set the SNM back its 'default' setting and I should sync at 6 dB with the training proceeding as normal.

Edited by deleted (Sat 30-Sep-06 14:00:37)

Don't, it would have been done whilst the engineer was on site.

In reply to:

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contact the powers that be and have the training period reset.

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You can apply for rambo access in woosh and do it yourself

Thanks Albertring.

The fault was pursued as ADSL/Voice Fault.

The first Engineer simply checked the phone for noise and didn't bother using his laptop since he said the noise would inevitably effect the ADSL.

The second Engineer attended to locate the fault and was a 'Voice' only Engineer and as I understand was not involved with ADSL at all.

Hopefully there will be some liaison and the fault may well have been logged with a re-train recommended.

As per my previous reply if a re-train requires me to re-sync I could return the Router to the 'normal' SNM setting using DMT which initiates a re-sync and the re-train would then commence.

I assume that either way unless I re-sync the re-train would nominally take place with me still sat on whatever SNM was in effect, say 10 or 15 dB, and could well be meaningless.

Or are you still skeptical of using DMT if a re-train is possible.