Line stats from a Netgear D7000 which I've plugged in instead of the Home Hub 4:

Downstream
2016 kbps
62.5 dB attenuation
5.9 dB noise margin

Upstream
448 kbps
31.5 dB
10.0 dB noise margin

I'm leaving it for a while to see how the statistics change.

BrianC1's assumption seems to be spot on to me.

I'm still of the belief that John Wayne did the wiring.

In reply to a post by Hawthorns:

BrianC1's assumption seems to be spot on to me.

I'm still of the belief that John Wayne did the wiring.

John Wayne may have just connected 2 unfiltered extensions to the A&B terminals on the Mk3 faceplate though

I you are not doing anything to it why do you expect the stats to change. At no point in this thread have you described how these cables sprouting out from the Master socket are connected. Your stats show a pretty long line so you may not get much improvement in speed even with optimal wiring..

And if IDC connections are used no need to go around cutting wires either just remove from the IDC

In reply to a post by Realalemadrid:

I you are not doing anything to it why do you expect the stats to change. At no point in this thread have you described how these cables sprouting out from the Master socket are connected. Your stats show a pretty long line so you may not get much improvement in speed even with optimal wiring..

I described where the sprouting cables go in the first post - one to the router and one to internal phone wiring.

I know I have a long line. That's why I hoped to see if there was anything I could do to squeeze out another half meg so my plans were to check whether the router was attached optimally and whether a change of router might help. Instead I appear to have opened a master socket of worms.

I described where the sprouting cables go in the first post - one to the router and one to internal phone wiring.

Which is a weird setup, can you take pics of the wiring where it connects?

I suspect it looks like a birds nest if 3 pair extension cables have been used and the blue/white and white/blue wires have possibly been routed through to the A&B terminals on the Mk3 plate from the back of the NTE5A.

For sure short lengths of cut wires would be unhelpful especially if they are unfiltered.

The reason I didn't suggest pulling wires out of the IDC connectors is that it could be seen as interfering with BT property. I think Andrew is absolutely right, though. It's not rocket science removing all non-BT wiring and starting any new internal wiring from scratch. And these days, many people only use the master socket anyway because all their phones are DECT.

Edited by BrianC1 (Mon 18-Sep-17 16:23:29)

In reply to a post by BrianC1:

And these days, many people only use the master socket anyway because all their phones are DECT.

But it appears that the OP is running his router from an extension socket so that means that at least one extension must be unfiltered.