Fault-tolerant SIP-based call control system

Fault-tolerant SIP-based call control system

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The session initiation protocol (SIP) will control multimedia sessions within the 3GPP IMS. The sessions have to be highly reliable. A fault-tolerant call control system based on a novel state-sharing design is proposed and evaluated through testbed experiments. The results show that this solution significantly improves the system reliability.


    1. 1)
      • Rosenberg, J.: `SIP: session initiation protocol', RFC 3261, June 2002.
    2. 2)
      • `IP multimedia (IM) subsystem—stage 2', 3GPP TS 23.228, Technical Specification, June 2001.
    3. 3)
      • A. Helal , A. Heddaya , B. Bhargava . (1996) Replication techniques in distributed systems.
    4. 4)
      • G. Coulouris , J. Dollimore , T. Kindberg . (2001) Distributed systems: concepts and design.
    5. 5)
      • Bozinovski, M., Gavrilovska, L., Prasad, R.: `Performance evaluation of a SIP-based state-sharing mechanism', IEEE VTS 56th Vehicular Technology Conf. (VTC) 2002, September 2002, Vancouver, BC, Canada.

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