Method of and apparatus for exchanging compatible universal identification telephone protocols over a public switched telephone network
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United States of America Patent
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Nov 25, 1997
Grant Date -
N/A
app pub date -
Feb 29, 1996
filing date -
Jun 30, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of and apparatus for providing compatible universal identification telephone protocols by generating predetermined unique audio sequences recognizable by the telephone user as defining standardized Audio Icon information and distinct from and separated from one another and other telephonically transmitted signals; sending and receiving such generated audio sequences on a public switched telephone network having paths the parameters of which fall within predetermined specified training sets, including modem performance standards; and assuring recognition and correct identification of such audio sequences conveyed along such paths.
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