IMS基本探讨TP3-0

The Basal Discovery of IMSTP3-0

IMS，IP多媒体子系统，为下一代网络用户服务提供强大的会话和服务体系结构平台。简要回顾了IMS的发展历程；详细介绍了IMS的体系结构，阐述了IMS机构的三层：应用层、会话控制层、传输与端点层的基本技术与功能；从兼容性、管理、安全三个方面分析了IMS的特点；展望未来IMS的应用前景。

IMS, the IP Multimedia Subsystem （IMS） provides a powerful session and service architecture creating a platform for next-generation user services. Generally reviews the development course of IMS; Specifys the IMS＇s architecture, Expatiate the three framework of IMS： the application layer, session control layer, and media and endpoint layer. Analyze its character about compatibility, management, and security. Finally prospect its application foregroud.