电路交换域 meaning in English

cs circuit switch

The author had taken part in the development of telecommunication monitor system ( tms )
本人参与了无线通信系统电路交换域的合法侦听系统研发。
In this system , hi1 port and hi2 port data were transferred by tcp / dp , and hi3 port by no . 7 signal system
在该系统中， hi1和hi2接口数据采用tcp ip协议传输，电路交换域中通信内容的传输采用no . 7信令系统。
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。