In reply to a post by MHC:

2 Blue/White
5 White/Blue

3 Orange/White

OK, that's exactly how the extension is wired up. So, to confirm, on the master I should replicate that (i.e take the Blue/White and White/Blue out of the A & B terminals?)

The removable part looks like this
http://www.rob-r.co.uk/other/UKphonecatwiring_files/...

No, leave A and B connected and screw it onto the wall.

Take the faceplate off, you will then see the test socket where the faceplate connects. The extension should be wired to the posts on the faceplate.

In reply to a post by BatBoy:

No, leave A and B connected and screw it onto the wall.

Take the faceplate off, you will then see the test socket where the faceplate connects. The extension should be wired to the posts on the faceplate.

OK, but this is where I am confused because I have screwed that back to the wall, that takes care of White/Blue & Blue/White (A&B). But it leaves me with the removable bit

5
4
3
2

and

Orange/White
White/Orange
Green/White
White/Green

The same are spare on the extension but 2 (Blue/White),3 (Orange/White) and 5(White/Blue) are taken. Leaving 1,4,6

White/Orange
Green/White
White/Green

You only need 2, 5 and 3 connected.

In that bundle behind the master socket, you need to find a blue, a white-blue, and an orange to connect to the faceplate to take the signal to the extension.

Unfortunately, by connecting 3 orange, this is the ring wire which causes noise problems on ADSL. So really, you should just connect 2 blue and 5 white-blue.

In reply to a post by BatBoy:

You only need 2, 5 and 3 connected.

In that bundle behind the master socket, you need to find a blue, a white-blue, and an orange to connect to the faceplate to take the signal to the extension.

Unfortunately, by connecting 3 orange, this is the ring wire which causes noise problems on ADSL. So really, you should just connect 2 blue and 5 white-blue.

The trouble is, Blue/White & White/Blue are in use on the master. They are connected to A & B on the non removable part

Yes, they should be. You need the other blue and white-blue that go to the extension.

In reply to a post by BatBoy:

Yes, they should be. You need the other blue and white-blue that go to the extension.

I feel so dumb. That was so much easier than I made it.

Thanks for sticking with me. It's all working great now. Really appreciate it guys.

p.s. I didn't need the ring wire either

Great news

Only going on what was right and read. Worked for me and did all the wiring here when rewired. If i said do the ring wire someone would moan not to. Thought it was old bell phones might so if problems would have said redo it. Said not to cut. Maybe 4 is not needed but my pnone plugs have 4 wires so no harm doing. What i all said should have worked if he did. Not keep fussing about a and b. Just the spare cable. Easy. 30 minutes job. Wish i never tried now. On phone not logged in

The dangly filters reproduce the ring wire, which is just produced by the master socket normally. Its when you leave and next person does not have ADSL that no ring wire can cause issues