Method and apparatus for verifying signaling and bearer channels in a packet switched network
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United States of America Patent
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Jul 1, 2014
Grant Date -
Jun 19, 2008
app pub date -
Mar 29, 2007
filing date -
Dec 15, 2006
priority date (Note) -
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Abstract
A computer-implemented method and apparatus verifies integrity of a Voice over Internet Protocol (VoIP) virtual connection at an analog terminal adapter (ATA) at an edge of an Internet Protocol (IP) network. A VoIP transaction is initiated toward a cooperating test unit across the IP network, establishing a VoIP virtual circuit. The test unit responds by transmitting a digital representation of or information representing a test tone across the IP network to the ATA. By evaluating the test tone at the ATA, integrity of a bearer channel of the virtual circuit can be verified directly, and integrity of a signaling channel of the virtual circuit can be verified indirectly.
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