Method and apparatus for sharing speakerphone processor among mu

Details Method and apparatus for sharing speakerphone processor among mu Method and apparatus for sharing speakerphone processor among mu

1990-12-10

1993-11-16

Dwyer, James L.

Telephonic communications

Multi-line or key substation system with selective switching...

With special service

370 31, 379165, 379242, 379388, H04M 100, H04M 300, H04B 320, H04L 516

Patent

active

052630838

ABSTRACT:
A communication system includes a number of terminals which communicate through a centralized switch of the system and a lesser number of speech processing circuits which are located remotely from the terminals and which allow full-duplex speakerphone capability to be available to each of the terminals of the system on a shared basis.

REFERENCES:
patent: 3755625 (1973-08-01), Maston
patent: 4449238 (1984-05-01), Lee et al.
patent: 4771417 (1988-09-01), Maxwell et al.
patent: 4912758 (1990-03-01), Arbel
patent: 4949335 (1990-08-01), Moore

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