Message waiting adjunct device

Details Message waiting adjunct device Message waiting adjunct device

1995-12-11

1997-09-02

Tsang, Fan

Telephonic communications

Audio message storage, retrieval, or synthesis

379372, 379376, 379396, H04M 164

Patent

active

056640080

ABSTRACT:
A telephone adjunct interface for use with a network-based voice and/or data message storage and delivery service detects and alerts the subscriber to the existence of waiting messages. The interface device utilizes a combination of AC ring detection and outcall polling of the network to determine whether a visual and/or audible notification should be provided to the subscriber. That is, if the subscriber phone is not answered after a selected number of rings, the interface polls the network after a suitable delay to determine if any messages were left. If the subscriber line is busy or on call-forward while a calling party is seeking to leave a message, the network service platform stores the message and waits a selected interval before seeking to alert the subscriber. Advantageously, the device is configured as a small, portable and inexpensive consumer premise unit which connects easily to all standard analog telephone systems that use modular connectors.

REFERENCES:
patent: 5243642 (1993-09-01), Wise, Jr. et al.
patent: 5384832 (1995-01-01), Zimmerman et al.
patent: 5432844 (1995-07-01), Core et al.
patent: 5461667 (1995-10-01), Remillard
Romar, LTD. VM-1000 Voice Message Waiting Indicating Brochure Jun. 22, 1990 .

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