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A UDP-Based State-Sharing Mechanism of SIP Transaction Stateful Proxy

  • Luo Shi-zhang
  • Liao Jian-xin
  • Zhu Xiao-min
Conference paper
  • 545 Downloads
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4138)

Abstract

Current IMS (IP multimedia subsystem) fault-tolerant systems only implemented state-sharing mechanism of SIP call stateful proxy. This paper proposes and implements a UDP-based state-sharing mechanism of SIP transaction stateful proxy. Based on heavy stress testing, experimental reliability figure is shown. By mathematical analysis and derivation, we proved the proposed relationship equation of Tout and reliability R. Experiments showed that the results of the theoretical analysis can reflect the real performance of the system, and that the theoretical and practical Toutbreakpoint value is consistent.

Keywords

State-sharing Fault-tolerance Session Initiation Protocol Reliability UDP transaction stateful proxy 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Luo Shi-zhang
    • 1
  • Liao Jian-xin
    • 1
  • Zhu Xiao-min
    • 1
  1. 1.State Key Laboratory of Networking and Switching TechnologyBeijing University of Posts and TelecommunicationsBeijing

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