In this work,the security authentication mechanism used by SIP is described. Moreover an experimental performance analysis of the SIP security mechanisms is provided,which based on the open source Java implementation of a SIP proxy server.

• 讨论了SIP协议的安全认证机制 ,并通过基于开放源码的Java程序在一个SIP代理服务器上的执行 ,对该应用中SIP协议安全机制及有关性能进行了分析评价。