Quote:
Originally Posted by Dave Moll
It goes both to the telephone and the "earthy" end of the bell - otherwise there would be no return path for the ringing current from the "ringing" wire. T1 (red, B leg) is not connected to the bell. It uses B9 (no internal connection) as a means to pass this to the telephone.
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On the paster diagram, terminal T1 is the 'earthy' end of the bell and the ringing wire should go to T2, yes?
If you look at drawings for a 300 and 700 series instruments, the 'earthy' end of the bell is in the cradle-switch / ASTIC / mic side and not in the LD pulse contact side. Have you tried swapping over A & B (ie: pins 2 and 5 on the plug) and leaving the ringing wire as-is?