When I moved here I found a NTL box, presumably for TV, but I was imagining that because NTL said it didn't exist. I also imagined the two master sockets (don't ask me), the brown box in the cellar, and the extension socket in the bedroom - all installed by NTL. There was also a BT phone wire - I got BT to put a master socket on the end of the it, and I removed the two NTL master sockets (including cutting the wires in the brown box). I then did this:
BT master --> living room extension --> connect upto wiring in cellar for NTL bedroom extension
So I basically made the bedroom extension live again by daisy chaining, using wiring that already existed but in the wrong configuration.
It's all dead easy - just make sure (regardless of colour) that you always connect 2 to 2 and 3 to 3 and so on. No crossing over. The wiring I worked with changed colour 3 times between the BT master socket and the bedroom extension. Took a fair bit of concentration
If I can do it, being useless at DIY and an accident waiting to happen, then anyone can
