Thanks for all the help, not sure I know any BT engineers unfortunately! My intention was to route the cable externally so save me cutting channels in a load of walls that don't need it. Its not a problem because the downlead from the telegraph pole follows almost the exact route I want to use for my extension cable. The real problem is that the extension socket is on an internal cavity wall between an old single storey extension and a newer (2004ish) 2 storey extension.
I'm pretty convinced the cable will pop out at the top of that wall on the 2nd floor and then find some other route to wherever the old master/junction box was. I do have an old GPO junction box in the porch and some 2 core wire running from it into a wall (I haven't got a clue where that goes either), does this sound like a possible connection for the extension socket? If so what's the best way of finding out? Should I wire up a 9 volt battery to the pairs then check with a Fluke or is there a slightly less Heath Robinson approach?
I'm pretty convinced the cable will pop out at the top of that wall on the 2nd floor and then find some other route to wherever the old master/junction box was. I do have an old GPO junction box in the porch and some 2 core wire running from it into a wall (I haven't got a clue where that goes either), does this sound like a possible connection for the extension socket? If so what's the best way of finding out? Should I wire up a 9 volt battery to the pairs then check with a Fluke or is there a slightly less Heath Robinson approach?
