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It needs to consider the establishment and release of IP telephony signaling-SIP or H.323 while analyzing VoIP network performance with OPNET, involving complex protocol configuration such as MGCP. What's more, the simulation efficiency will be greatly reduced in large-scale network. This paper presented an new idea to study the performance of VoIP network, it used the built-in hybrid simulation mechanism which replaced PSTN traffic by background traffic. The results proved to be feasible, while simulation efficiency has also been improved.
Date of Conference: 20-22 Aug. 2010