Muting circuit for subscribers telephone

Details Muting circuit for subscribers telephone Muting circuit for subscribers telephone

1974-10-23

1976-02-17

Cooper, William C.

179 84T, H04M 100

Patent

active

039393119

ABSTRACT:
A subscribers telephone circuit that includes automatic muting of signals reproduced by a transducer contained within the subset, each time the telephone's handset is removed from its cradle. The circuit employs electronic techniques to eliminate the need for additional contacts on the hook switch to provide the necessary muting.

REFERENCES:
patent: 2392321 (1946-01-01), Hersey
patent: 2686844 (1954-08-01), Brewer
patent: 2972021 (1961-02-01), Bryant

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