Differentiated handling of SIP messages for VoIP call control
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United States of America Patent
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Apr 20, 2010
Grant Date -
May 19, 2005
app pub date -
Nov 17, 2003
filing date -
Nov 17, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Systems and methods are disclosed for differentiated handling of VoIP call control messages according to their importance and functionality, thus providing to VoIP infrastructures a level of robust call control similar to that in PSTN networks. SIP messages are classified by their type or content, and resources of a VoIP call control server are allocated to the SIP messages according to a policy. The scheme also provides overload protection and prioritized handling of certain kinds of requests in VoIP call control servers.
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