Abstract: In view of the Next Generation Network(NGN)’s characteristic, this article proposes a Session Initiation Protocol(SIP)-based lawful interception solution which may be used in the next generation network. 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. The result proves this implementation of lawful interception in NGN is feasible and safe.

Key words: Next Generation Network(NGN), VoIP, Session Initiation Protocol(SIP), lawful interception

摘要： 针对下一代网络的特点，提出一套可用于下一代网络中的基于会话初始协议(SIP)的合法监听解决方案。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。结果证明其在下一代网络中实施合法监听是可行的、安全的。

关键词: 下一代网络, VoIP技术, SIP协议, 合法监听

CLC Number: 

• TP277