Control circuit for telephone receiver and transmitter

Details Control circuit for telephone receiver and transmitter Control circuit for telephone receiver and transmitter

1982-07-14

1984-09-18

Pellinen, A. D.

179 84VF, 179 90K, H04M 150

Patent

active

044726015

ABSTRACT:
In a telephone subscriber set, circuitry is provided for muting the receiver prior to disabling the transmitter and for enabling the transmitter prior to removing the muting from the receiver.

REFERENCES:
patent: 3525819 (1970-08-01), Jackson
patent: 3544731 (1970-12-01), Cowpland
patent: 3778556 (1973-12-01), Mees et al.
patent: 3787836 (1974-01-01), Hagelbarger
patent: 3941942 (1976-03-01), Nash
patent: 3978295 (1976-08-01), van der Plaats
patent: 4061886 (1977-12-01), Callahan Jr. et al.
patent: 4196318 (1980-04-01), Nelson
patent: 4303907 (1981-12-01), Wilson

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