Processing of communication session request messages

Details Processing of communication session request messages Processing of communication session request messages

2007-12-25

2007-12-25

Smith, Creighton (Department: 2614)

Multiplex communications

Pathfinding or routing

Combined circuit switching and packet switching

Reexamination Certificate

active

10420190

ABSTRACT:
SIP (session initiation protocol) requests are processed by a networked server having a processor which has a dedicated packet handling circuit (or network-aware co-processor), without passing said requests through an IP stack to an application layer. The co-processor receives SIP requests in the form of IP packets. The co-processor then parses the packets, and thereby identifies a SIP destination address in the datagram of the packet. A memory area accessible by the co-processor has a stored list of SIP addresses and of associated forwarding addresses to which packets containing the listed SIP destination addresses are to be directed. The co-processor directly modifies the packets to include the stored further address, which may be an IP address or a SIP address, associated with the original destination SIP address and then forwards the packets via the network.

REFERENCES:
patent: 6584076 (2003-06-01), Aravamudan et al.
patent: 6788675 (2004-09-01), Yang

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