This paper proposed a solution that parses messages from H.323 and multimedia session control protocols to set up and tear down packet filters as needed to gather traces of multimedia sessions.

• 针对这种情况，本文提出了一种基于H.；323协议和多媒体会话控制协议，完成对某一些特定通话过程的数据分析、过滤与跟踪的方案。