Therefore, this method can be used for the optimal design of circuit-switched network. 因此,这一方法非常适合于电路交换网的优化设计。
When the closed, based on circuit-switched network changes to an open, based on IP-data-services network in a large-scale enterprise, security and management problems become even more exposed. 当大型企业网络由封闭的、基于电路交换的系统向基于开放、IP数据业务转型中,安全及管理问题更加暴露。
For China Mobile, original voice business on circuit-switched transmission network can not satisfy the requirements under the new situation. It is necessary to change the transmission network to IP network and increase the capacity. 对于中国移动,原有的以电路交换为基础的、以承载语音业务为主的传输网络已经不能满足新形势下的需求,传输网络的IP化和容量的扩大迫在眉睫。
Traditional circuit-switched network will coexist with packet-switched network based On IMS for a long period because of technology and cost. 由于技术和成本问题,传统电路交换网络与基于IMS的分组交换网络还将会在很长时间内并存。
Signaling Gateway who is the exchange node controlling signaling information between soft-switched networks and circuit-switched network is an important functional entity of the entire NGN, and Responsible for signaling infomation to relay, translation or end treatment. 信令网关作(SG)为软交换网络和电路交换网络的控制信令消息转换互通节点,是整个软交换网络的重要功能实体,负责对信令消息进行中继、翻译或终结处理。