Telephone exchange conference circuit

Details Telephone exchange conference circuit Telephone exchange conference circuit

1983-10-06

1986-01-21

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

H04Q 1104

Patent

active

045660964

ABSTRACT:
A telephone exchange conference circuit for three-party conferences, receives the PCM bytes from the conferees in a FIFO store (4), and checks the bytes in a processor (1) to find the one for the loudest outgoing speech. This is then sent to another FIFO store (5) for transmission to the other conferees. This loudest speech sample is sent to all conferees other than the one which originated that sample: he gets a silent code.
The system has two time slots per conferee, one for "talk" and for "listen".

REFERENCES:
patent: 3967070 (1976-06-01), Srivastava
patent: 4031328 (1977-06-01), Pitroda
patent: 4054755 (1977-10-01), Lee et al.
patent: 4175215 (1979-11-01), McLaughlin et al.
patent: 4267593 (1981-05-01), Regan et al.
patent: 4271502 (1981-06-01), Goutmann et al.
patent: 4388717 (1983-06-01), Burke

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