Wiring Diagram For Telephone Cable. Bt openreach are using new cables with new colour codes. Use the same cable colour for the same terminal on each socket the actual colours are not important.
Blue wire to red terminal. Position each wire as shown in the diagram leaving 12mm overhanging. The old wiring scheme was as follows connector 2 blue with white rings connector 3 orange with white rings connector 5 white with blue rings this has now changed to connector 2 blue connector 3 brown connector 5 orange the ring wire or bell wire.
Bt external telephone cable colour code.
You can discover this guide easy to make use of as well as really affordable. Telephone wiring for a phone outlet is typically either 1 2 or 3 pairs 2 4 or 6 the diagram below provides the transposition between these standards. There may be instances where you may need to connect to or transpose from the old quad cable. 4p4c 4 position 4 conductor rj9 rj10 rj22 used mostly for telephone handset cables but also for some lighting data and control cabling.