Phone Box Wire Diagram. Bluewhite whiteblue probably the only one youll ever use orangewhite whiteorange. The box is a bt52a bt as in block terminal not british telecom.
You should disconnect the main phone line from the source before continuing wiring a phone jack. Terminals are marked a and b and can be screw type terminals or idc inserter type as shown in the photo. Dsl phone jack wiring diagram wiring diagram is a simplified pleasing pictorial representation of an electrical circuit.
In most residential phone wiring the cable contains four individual wires.
It shows the components of the circuit as simplified shapes and the aptitude and signal links between the devices. Bt66b external telephone cable junction box. Dsl phone jack wiring diagram wiring diagram is a simplified pleasing pictorial representation of an electrical circuit. Greenwhite means green base white overprint whitegreen means white base green overprint.