[Nemesis]

Originally Posted by SMHarman

are they plugged into the NTL master socket or another extension in the house.

Tried both

Originally Posted by SMHarman

Does the house have extension wiring, if so can you disconnect that and see if the master socket alone works OK.

Yes it does, and yes I have isolated the main box, no difference.

Originally Posted by SMHarman

This sounds like a missing third connection on the phone cable, Orange with white bands to pin 3

I've checked the wiring and it looks ok.

http://www.wppltd.demon.co.uk/WPP/Wi...telephone.html

This document also mentions polarity and problems with answer phones. I'd say you only have 2 pins wired though.

Nice one, I'll check the polarity out (i.e. swap the wires round and see what happens .