Three-way call detection system
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United States of America Patent
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Jun 16, 1998
Grant Date -
N/A
app pub date -
May 16, 1996
filing date -
May 16, 1996
priority date (Note) -
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Abstract
Disclosed is a three-way call detection system that uses digital signal processing to identify a third party connection. The disclosed invention operates by establishing a baseline ambient, or background, noise level, and detecting when the signal noise level drops below the ambient noise level. When the current signal noise level drops below the ambient noise level, the system assumes that a three-way conference call has been attempted by the called party.
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