BT to RJ45.COM

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The following covers some common extension wiring issues.

Problem
Phone ringing continuously
Cause
Terminals 2 and 5 swapped between sockets (2 at one socket connected to 5 on another and vice versa)


Problem
No ringing
Cause
Terminal 3 disconnected

Problem
Ringing but no speech (or very poor speech) and can't dial out.
Cause
Wire between terminals 2 or 5 broken.

Problem
Very poor speech quality, possibly poor bell
Cause
Terminal 3 and 2 or 3 and 5 transposed