下一代通讯网络技术IMS简介

MS Technology Briefings Next Generation Communication Networks

在通讯领域由电路交换系统向分组包交换系统过渡的历程中，阶段性的出现了很多种技术，而IMS（IP多媒体子系统）技术是目前通讯界公认的下一代通讯网络的主要标准。IMS技术最大的特点是将传统通讯系统中的业务、控制和接入部分完全分离开，各自成为一个体系．各体系间用统一标准的接口进行连接，这样的结构可以简化网络结构。节省投资，易于管理。

During the migration from traditional PSTN switch network to package switch network, lots of new technologies are introduced, and IMS （IP Multimedia Subsystem） technology is the standard direction of next generation communication network. IMS divide the communication system into 3 Tiers - Application, Control and Access, each tier talk with others tiers with standard interface protocol, this structure lead to more simple network, investment saving and easy to management.