Interface circuit for remote control of a PABX
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United States of America Patent
Stats
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Aug 4, 1987
Grant Date -
N/A
app pub date -
Jan 14, 1985
filing date -
May 4, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An interactive audio/visual demonstration system for connection to a telephone system, comprising an audio/visual unit connected to an interface circuit. The interface circuit decodes DTMF tones received from the audio/visual unit and in response causes implementation of one or more special features in the telephone system. The interface circuit is preferably connected to an audio track of a video tape recorder, and to the telephone system, such as a PABX, in order to implement a highly interactive video tape presentation in response to a video tape being played on the video tape recorder. The interface circuit is of simple construction and hence durable and inexpensive.
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