Call routing and intelligent control are closely linked with the circuit switched network 呼叫路由与智能化控制和电路交换网络紧密地结合在一起。
However , both the package switched network and the traditional circuit switched network will exist for a long time due to the cost and some technical problems 但是,由于技术和成本问题,传统电路交换网络与分组交换网络还将会在很长时间内并存。
The quick develop of voip technology brought significant contributions to the convinence and speed for communication . therefore , voice communication based on next generation network will replace the circuit switch network 以ip技术为主的分组交换网络将取代传统的电路交换网络,成为将来电信网络的主体。
The article generalized the interception mode of packed switched network , viop system based on sip and ip network from circuit switched network . the voip system based on sip is distributed system 因此,本文在无线通信系统电路交换域的合法侦听系统研发的基础上,将其侦听模型推广到包交换域、基于sip的voip系统和ip网络。