Router or line problems

[Glenn]

Q2 2009 according to Samknows Rik. The problems did start after the previous round of BT engineering work, so I think it is something that was done in the exchange. Andrew checked my line when I called support but found no problems.

I think I'll email them with the diagnostics pages from the router to see if that will help at all.

[Rik]

Worth a try, Glenn. My gut instinct is that BT dropped the ball in the last round of work, the short-notice announcement of yet more major upheaval is too much of a coincidence to me. OTOH, I have no evidence for this, just instinct.

[Glenn]

Just to make sure one final time that it was not an internal problem, I connected one of my routers to the test socket. During the night when I had no PC's running the line retrained again. Miriam should now be logging a case with BT for me today, hopefully BT will find a problem and correct it.

[Simon]

Best of luck, Glenn.   

[Rik]

Keep us posted.

[Sebby]

It always nice to know for certain that a problem is not to do with your own setup. Let us know the outcome.

[Glenn]

Looking at the router stats last night, it looks like BT had aplay with my connection yesterday lunchtime, it lost sync 3 time in 6 minutes, with the last reconnect at 928kbs. It is presently running at 3392kbs and without a loss of sync/retrain in the past 19hrs, it is still connected to the test socket.

[Sebby]

It could have just been a noise burst, but it's difficult to know.

[Rik]

May your profile recover quickly.

[Glenn]

It looks like BT may not have fixed the problem just the symptom, the noise margin rasied to 12db before I left for work, as a result the sync lost 500kbs

[Rik]

Have you checked with support, Glenn?

[Glenn]

not yet, just got into work

[Glenn]

BT made the change to the target noise margin. To me it looks like they are treating the symptom not the cause.

[Glenn]

OK I just checked my router stats via Logmein, it has resync'd again, Support are logging another case with BT

[Glenn]

James from IDNet sent me an email yesterday, saying BT can't find a problem on the line, since then the line has resync'd twice, the last time was just after my weekly race night with my rfactor racers.

I have just sent the 2wire stats page along with the diagnostics pages, hopefully if they can be sent to BT it will help them findout what the problem is

[Simon]

Hope it gets sorted soon Glenn.  Possibly another symptom of the 'damaged cable' BT are supposed to be repairing on the 29th? 

[Sebby]

As your ADSL was an engineer install, you'll have a filtered faceplate, so it can't be internal wiring. Therefore, it has to be something external, or a local noise source. I know that probably doesn't help a lot, but we're at that point where you've got to decide if you want an engineer to visit and risk getting a £160+ bill.

[Glenn]

OK, I'm getting a little p***ed off with BT now, this morning the target NM was increased on my line again to from 12 to 18Db!!!!! the connection speed is now down to 50% of what it was before BT did their work in March.

[Sebby]

I don't believe 18dB exists, so it must be 15, but noise has reduced since the last sync.

[Glenn]

Sebby, its currently now showing at 17db, but was at 18db around 10 mins ago

Broadband Link – StatisticsDSL  Down  Up
Current Rate:  1824 kbs   448 kbs 
Max Rate:  2220 kbs   920 kbs 
Current Connection:
Current Noise Margin:  17.0 dB   20.0 dB 
Current Attenuation:  59.9 dB   31.5 dB 
Current Output Power:  16.7 dBm   11.9 dBm 

ATM  Cells  Errors  %
Transmit:  5525777  0  0
Receive:  20520912  0  0

IP  Bytes  Packets  Errors  %
Transmit:  223804250  845115  0  0
Receive:  928489604  1453261  0  0

[Rik]

I agree with Sebby, Glenn, that 15db is the highest official NM. I'm guessing your re-sync was when the line was particularly noisy and now the line has improved a bit. It might be worth forcing another re-sync and then checking NM immediately afterwards.

[Glenn]

OK, re-sync'd, I take what I said about BT , they haven't raised the NM, it is back at 12db

[Rik]

What sync speed did you get? Something must be banging a lot of noise on your line, that extra 6db is equivalent to 1000-1400k normally.

[Glenn]

2700 kbs, up from the 1800kbs it sync'd at 05.30 sync this morning, I was sound asleep at the time.

[Rik]

What time does your heating turn on?