采用X-Lite记录下来的SIP的会话过程,其中分为建立连接和取消连接两个部分,包含了最基本的会话协议内容和参数.可以作为一个入门级的会话例子参考.-X-Lite record of the conversation SIP process. It is divided into establishing connections and the abolition of connecting two parts includes basic conversational content and

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