System for VOIP based emergency stand alone service
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United States of America Patent
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Nov 15, 2011
Grant Date -
N/A
app pub date -
Aug 30, 2007
filing date -
Aug 30, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Method and apparatus for ad hoc cooperative routing in an IP network. Included is an emergency stand alone (ESA) system that provides a bypass to a failed TDM switch for multiple communication devices in communication with one or more TDM switches. One or more internet protocol media gateways communicate a multicast signal upon the failure of a switch. The multicast initiates Voice over IP communication between endpoints, bypassing the failed switch.
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