In reply to a post by Zarjaz:

Your original set up was producing a fault condition known as a bridge tap.

DLM will have seen this bridge tap, and the errors it produces, and raised the SNR to attempt to stabilise things. This is why your speed has suffered.

Hopefully the Openreach bod can resolve this issue.

Electrical interference... was REIN perhaps the word used ? Extremely unlikely.

Get the bridge tap sorted, get a DLM. reset done. Problem should be fixed.

I have noticed that my bell wire is still attached to the master socket, I've read this wire can cause issues.

In an ideal (for VDSI) set up, its a pair of wires between the DSLAM (by the cab) and the NTE.
If there is an additional pair of wires attached either before the NTE, of extension wiring connected (without a service specific front plate) to the NTE, then this will give the ‘bridge tap’ test result.

If the extension that was being used is the only bit of wiring after the master socket, then removing the bell wire may be the change that is needed. Its then either wait for DLM to see the improvement and hand back some speed over time, or get a DLM reset done by ISP.

Bell wire or no, that extension wiring will be creating a bridge tap.

In reply to a post by MrSaffron:

If the extension that was being used is the only bit of wiring after the master socket, then removing the bell wire may be the change that is needed. Its then either wait for DLM to see the improvement and hand back some speed over time, or get a DLM reset done by ISP.

Update for Mr Saffron and Zarjaz

EE managed to get an OR engineer out first thing this morning. He checked the line and couldn't find any issues with it.

He reset the profile of the line (sorry if that's not correct terminology) and have vastly improved speeds with the router still on the extension upstairs. Of course I have got to let this settle for few weeks. He also disconnected the bell wire too whilst he was here, be interesting to see if that makes big difference.

Here are my new router stats (at very bottom), can you spot anything obvious that's improved from the stats posted before apart from the obvious speed increase?

Before Reset (in extension socket)
https://www.dropbox.com/s/aqk4g8xqvtq44gf/Screenshot...

Before Reset (in test socket of master socket)
https://www.dropbox.com/s/6ivgxk3q0pgjg09/Screenshot...

After Reset This morning
https://www.dropbox.com/s/lp124opersol0ut/Screenshot...

You both mentioned in your previous posts about the bell wire, does the bell wire only need to be removed from the master socket and not the extension socket or does it also need to be removed from the extension socket and master socket. At the moment now its not connected to master socket as the OR engineer has just removed it but could there be one on the extension socket too?

Now the line has been reset would you both recommend connecting the router directly to master socket now the reset has been done?

I am somewhat taken aback that the engineer left it connected on an extension !!

Bell wire ought to be disconnected from either end. And were it me, I’d leave (if possible) the router connected at the NTE with ALL extension wiring disconnected.

In reply to a post by Zarjaz:

I am somewhat taken aback that the engineer left it connected on an extension !!

Bell wire ought to be disconnected from either end. And were it me, I’d leave (if possible) the router connected at the NTE with ALL extension wiring disconnected.

OK, I think I will move it, job for this afternoon.

The OR engineer said that they are not allowed to touch the extensions as they can only touch the master socket as that's where their responsibility finishes unless the ISP says for them to look at the extensions.

I have just popped upstairs to the extension that the router is currently attached to and removed the ring wire on that too. I'll see how I get on until I move it this afternoon.

What do you think of the updated stats? Anything that pops or jumps out at you as a big improvement apart from the obvious speed increase?

The big hike in sync rate is evidence that sorting out the internal wiring is the way forward.

The comment about not touching the extension wiring suggests that your ISP hasn’t authorised Openreach to work on it .... a touch tight fisted, but hey ho

I would have thought that this situation is an internal wiring issue and could be charged for?