Visual message waiting indication in a telephone voice message s

Details Visual message waiting indication in a telephone voice message s Visual message waiting indication in a telephone voice message s

1994-10-28

1996-05-28

Hofsass, Jeffery

Telephonic communications

Audio message storage, retrieval, or synthesis

379 92, 379105, 379393, 379 88, H04M 1100

Patent

active

055219640

ABSTRACT:
A telephone system which offers a voice message service and which enables visual indication of waiting messages at subscriber locations using suppressed ringing connections through the switching network of the system and in which acknowledgement signals are provided to the system by the subscriber locations.

REFERENCES:
patent: 4453041 (1984-06-01), Castro et al.
patent: 4468541 (1984-08-01), Cohen
patent: 4811381 (1989-03-01), Woo et al.
patent: 4853952 (1989-08-01), Jachmann et al.
patent: 4969186 (1990-11-01), Sayre, II
patent: 4972461 (1990-11-01), Brown et al.
patent: 5003577 (1991-03-01), Ertz et al.
patent: 5189694 (1993-02-01), Garland
patent: 5363431 (1994-11-01), Schull et al.

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