Quote:
Originally Posted by Euros1951
Could the SEC'T be used as a cut off for the transmitter- the same as mute used today?
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GPO/PO/BT telephones used a different handset (
Handset No 6) fitted with a switch to cut off the transmitter by shorting it out on most telephones or disconnecting the transmitter circuit on supervisors handsets or local battery telephones. See
N861 for connections