CAS tone disguising method and apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Aug 8, 2000
Grant Date -
N/A
app pub date -
Mar 31, 1997
filing date -
Mar 31, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The ADSI system 100 has a file stored in RAM 202 or ROM 204. The file plays a CAS tone. The CAS tone is disguised by playing one or more introductory tones as frequencies lower than the CAS tone. The user is conditioned to receive a CAS tone by ramping the CAS tone amplitude or increasing the amplitude in discrete steps.
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