Conference circuit for pulse coded modulated telephony

Details Conference circuit for pulse coded modulated telephony Conference circuit for pulse coded modulated telephony

1976-10-14

1977-10-18

Stewart, David L.

179 18BC, H04M 356

Patent

active

040547558

ABSTRACT:
A method of providing a multi-port conference circuit for use in a telephone switching system employing pulse coded modulated signals for transmission and supervision. Samplings of coded information are employed as a source of conference data and comparison with the digital information contained therein is employed to choose the speaker in a conference group. Included circuitry provides compensation for degradation caused by speech clipping and noise.

REFERENCES:
patent: 3699264 (1972-10-01), Pitroda
patent: 3748394 (1973-07-01), Thomas
patent: 4007338 (1977-02-01), McLaughlin
patent: 4022981 (1977-05-01), McLaughlin

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