Early detection system and method for encrypted signals within packet networks
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United States of America Patent
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Jun 29, 2010
Grant Date -
Oct 19, 2006
app pub date -
Feb 24, 2005
filing date -
Feb 24, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
A system and method for providing early detection of encrypted signals within a secure connection for voice over Internet protocol (VoIP). The system and method includes a non-complex, in-band, and early encryption detector within the voice path. A transmitter sends out a known pattern. Based upon the received pattern, the receiver decides whether its encryption capabilities match up with those of the transmitter. If the capabilities do not match, then the receiver waits for the signalling message for the correct mode of operation. No packets are utilized until the receiver and transmitter encryption capabilities are matched.
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