By way of comparison this is what I'm currently getting, same attenuation but over 3 times faster. That's with a good old Netgear DG834GT with DGTeam firmware and noise margin set to 50% of default.

ADSL Link Downstream Upstream
Connection Speed 4535 kbps 971 kbps
Line Attenuation 62.0 db 38.9 db
Noise Margin 3.5 db 6.2 db

OP may have an Virgin ADSL MAX service though...are you on ADSL2?

In reply to a post by MinnieMinno:

They will ask Open Reach to lower the noise margin to 6dB

OR don't deal with NMs; they are responsible for only the cabling/wiring.

It's your ISP who can adjust the NM.

Using DG834GT (wired) + Firmware Version V1.03.22 - DGTeam Rev. 1018
Exchange is 20CN and line stats just now are:-

ADSL Link Downstream Upstream
Connection Speed 4000 kbps 448 kbps
Line Attenuation 62.0 db 30.5 db
Noise Margin 4.6db 16.0 db

In reply to a post by Apprentice:

Using DG834GT (wired) + Firmware Version V1.03.22 - DGTeam Rev. 1018
Exchange is 20CN and line stats just now are:-

ADSL Link Downstream Upstream
Connection Speed 4000 kbps 448 kbps
Line Attenuation 62.0 db 30.5 db
Noise Margin 4.6db 16.0 db

That's "Very Good" according to http://www.coolwebhome.co.uk/calc/calculator.php

In reply to a post by Anonymous:

Might be worth a try when you are at home over the w/end, powerdown (switch it off)) the router last thing at night or around 8.00am the following morning and unplug the power brick and leave it off for a few hours. Connect the router directly into the test socket eventually plug the router's power brick back in and power up at around1.00pm to 2.00pm.
Don't plug in/connect the phone, take the router stats ASAP.

This shows you the TEST socket within a BT master socket.

Does the router get very hot to touch when in use?

Harry

I'll try that tonight and tomorrow morning. The router is not overheating: it's warm but not hot.

In reply to a post by MrSaffron:

Oops. Nothing to do with Openreach

Virgin will get onto C&W who manage their off net broadband, who will chase BT Wholesale who control the DSLAM (as you appear to be non-LLU too)

Is there any chance you could explain the meaning of 'non-LLU'? Thanks!

In reply to a post by 4M2:

OP may have an Virgin ADSL MAX service though...are you on ADSL2?

I thought we were on ADSL2 but this morning the Virgin Tech Support assistant said it looked as though our exchange had not been upgraded. I just don't know whether this is the case or not since different engineers and operatives tell very different stories. Is there any way I can check this myself?

Edited by deleted (Fri 14-Sep-12 15:48:25)

http://www.robertos.me.uk/html/what_is_llu-.html

Which exchange is it please?

Try the samknows website .....

http://www.samknows.com/broadband/exchange_search

Worth a read if you've time with regard to line stats .....

http://www.kitz.co.uk/adsl/linestats.htm