Telephonic communications – Audio message storage – retrieval – or synthesis
Patent
1987-12-01
1989-12-05
Brown, Thomas W.
Telephonic communications
Audio message storage, retrieval, or synthesis
379 77, 379351, 379386, H04M 165
Patent
active
048857637
ABSTRACT:
A voice mail system includes method and apparatus for muting a previously recorded audio signal upon detection of a DTMF signal to differentiate between recorded DTMF signals and valid DTMF commands. A DTMF signal detected after muting is recognized as an invalid command.
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Hanson Paul G.
Klarquist Thomas D.
Nepple Bruce C.
O'Brien Dennis J.
Park Michael C.
AT&E Corporation
Brown Thomas W.
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