Telephonic communications – Audio message storage – retrieval – or synthesis
Patent
1988-12-02
1990-04-17
Stephan, Steven L.
Telephonic communications
Audio message storage, retrieval, or synthesis
379 84, 379214, 379393, H04M 1100, H04M 1110
Patent
active
049187198
ABSTRACT:
A problem has been encountered in directory assistance and intercept systems which provide automatic announcement facilities to announce a directory number or line status to a customer and which permit the customer to be subsequently connected to an operator if the announcement is unsatisfactory. In such systems, if the customer disconnects and immediately attempts to place another call, such a situation may be interpreted by the local switching system serving the customer as a "flash"; if the customer is provided with three-way calling then the connection to the directory assistance or intercept system is put into a hold state while the customer dials a new number. In the meantime, the directory assistance or intercept system, not being aware of the hold status of the connection to the customer, sets up a connection to an assistance operator who hears nothing. This "no voice" connection is costly and annoying to the assistance operator. No voice connections are eliminated by checking for a positive voice signal or for a positive keyed command signal using a voice processing unit following an announcement and prior to setting up a subsequent connection to an assistance operator. If no positive keyed command or voice signals are detected, the call is disconnected and the no voice connection to an assistance operator is eliminated.
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American Telephone and Telegraph Company
Stephan Steven L.
Tomassini James E.
Ulrich Werner
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