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Technical News & Discussion => IDNet Help => Topic started by: bridgej on Jan 16, 2010, 12:46:49

Title: VERY SLOW CONNECTION
Post by: bridgej on Jan 16, 2010, 12:46:49
Hi

I keep getting a very slow intermittent connection, and the noise margin keep falling through the floor, it should be and normally is about 6.0db

But here are the stats :

ADSL Link                  Downstream     Upstream
Connection Speed    5395 kbps            846 kbps
Line Attenuation             49.0 db          28.5 db
Noise Margin             0.4 db             4.6 db


any ideas
Title: Re: VERY SLOW CONNECTION
Post by: Rik on Jan 16, 2010, 12:49:53
None from that data. You're on WBC, so it could be that DLM is finding a high error count on your line, or it could be a BT fault or engineering work. Whereabouts are you.
Title: Re: VERY SLOW CONNECTION
Post by: bridgej on Jan 16, 2010, 12:52:46
I'm on the Stratford exchange in east London
Title: Re: VERY SLOW CONNECTION
Post by: Rik on Jan 16, 2010, 12:58:55
There have been problems at Bermondsey, Mile End and Stepney, perhaps they've had a knock on effect?

If you lose connection, call support on 0800 710 2000 and someone will get back to you. Otherwise, if speeds are still poor, talk to them on Monday.
Title: Re: VERY SLOW CONNECTION
Post by: bridgej on Jan 16, 2010, 13:00:22
Stats now:


ADSL Link                      Downstream     Upstream
Connection Speed    5395 kbps            846 kbps
Line Attenuation             49.0 db            28.5 db
Noise Margin           3.2 db           6.4 db
Title: Re: VERY SLOW CONNECTION
Post by: Rik on Jan 16, 2010, 13:01:43
WBC is much more susceptible to noise than Max, because of the higher frequencies involved. I see a 3db swing, whereas it used to be 1db on Max.
Title: Re: VERY SLOW CONNECTION
Post by: bridgej on Jan 16, 2010, 13:04:22
I thought the guys at Idnet could set the noise margin, why has it gone down so much, the IP of my line is 4000k and I am about 2km from the exchange.

I'm sure they did  something when I first connected to WBC and adjust the noise margin, so it was between 6.0db and 9.0db
Title: Re: VERY SLOW CONNECTION
Post by: Rik on Jan 16, 2010, 13:05:41
They can see it, but they don't monitor lines all the time.
Title: Re: VERY SLOW CONNECTION
Post by: bridgej on Jan 16, 2010, 13:06:37
Stats now:

ADSL Link                  Downstream     Upstream
Connection Speed    5395 kbps    846 kbps
Line Attenuation            49.0 db    28.5 db
Noise Margin             4.6 db    6.7 db
Title: Re: VERY SLOW CONNECTION
Post by: Rik on Jan 16, 2010, 13:19:33
I'm not sure why you are posting your line stats, they show the NM varying, which it will do throughout the day. That's perfectly normal. I currently have a 10.7 margin dropped from 12 when I came online this morning. You don't appear to have lost sync at all.
Title: Re: VERY SLOW CONNECTION
Post by: bridgej on Jan 16, 2010, 13:45:03
it's back to 6.3db

I realise it fluctuates, but not so widely, that was why I posted them, but everything seems better again now
Title: Re: VERY SLOW CONNECTION
Post by: Rik on Jan 16, 2010, 16:09:31
Get yourself a copy of Routerstats or Routerstats Lite:

http://www.vwlowen.co.uk/internet/files.htm
http://www.vwlowen.co.uk/moreinternet/files.htm

Run that for 24 hours and you'll get a clear picture of the variation, but I see a swing of 3-4db these days.
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