Conference circuit for pulse coded modulated telephony

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

1976-07-28

1977-05-10

Cooper, William C.

H04M 356

Patent

active

040229815

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.

REFERENCES:
patent: 3699264 (1972-10-01), Pitroda
patent: 3761624 (1973-09-01), Lewis et al.
patent: 3787630 (1974-01-01), Carbrey
patent: 3796833 (1974-03-01), Lewis et al.

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