I have recently had problems with my Broadband,i could get BB using the BT test socket,when the face plate was replaced no BB the phone was OK.i checked all my extension wiring for shorts and continuity all OK, searching the net i obtained some info, namely terminals 2 & 5 have -48v & 0volts.I also had -48v on the Bell terminal (3), i removed this wire orange with white bands, and now everthing works, i do not need an extension phone so a bell line is not necessary.Should there be a voltage on terminal three, this was measured from an extension socket after the face plate was replaced.Any helpful BT Engineers who might be able to answer this problem, would appreciate any help thank you. Phil