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详细讲解下一代网络的结构,主要讨论下一代网络的基本原则、功能结构和典型的实现方法,以及IP多媒体子系统的结构和功能实体等。
Explain in detail the structure of the next generation network, mainly discussing the basic principles of next generation networks, functional structures and typical implementation methods, as well as the structure and functional entities of the IP multimedia subsystem.