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

摘要

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 T_(out) 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 T_(out) breakpoint value is consistent.