After thorough analysis of the Cisco's IP-based Lawful Interception architecture and combined with SIP call setup flow, it is introduced into the NGN.
该文通过分析思科提出的基于IP网络的合法监听架构并结合SIP呼叫建立流程的特点，将该架构扩展到下一代网络中。
Finally, the definition of interception messages, the transmission format of call content package and transmission method of interception result on the standard interfaces are provided.
最后，给出了标准化接口上侦听消息的定义、呼叫内容分组的传送格式以及侦听结果的传送方法。
Finally, the definition of interception messages, the transmission format of call content package and transmission method of interception result on the standard interfaces are provided.
最后，给出了标准化接口上侦听消息的定义、呼叫内容分组的传送格式以及侦听结果的传送方法。
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