Method of and apparatus for integrated voice (audio) communication simultaneously with "under voice" user-transparent digital data between telephone instruments
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United States of America Patent
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Jul 30, 1991
Grant Date -
N/A
app pub date -
Jun 21, 1989
filing date -
Jun 21, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A novel method of and apparatus for voice communication and transparent, non-interfering, automatic digital data exchange between appropriately equipped telephone terminals having cooperative digital signal processing and visual display equipment, using special recognition signal protocol triggering signals and providing modem capability for FAX, printer, microprocessor, answer machines and the like for providing extended services using in-band signalling sensible by users and machines. Such method is useful both with ordinary telephone exchanges and ISDN type exchanges.
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