摘要
SIP协议是NGN中的重要协议,本文对SIP协议的网络元素、消息机制以及它对多媒体通信的支持等做了概要介绍,在此基础上给出了一种基于SIP协议规范的IP电话系统的设计方案,并介绍了该系统的工作流程、协议实现,探讨了其QoS保证及安全机制等技术。该系统具有广泛的适用性、良好的可扩展性和较高的智能性等优点,且易于操作和维护。
SIP is one of the important protocols in NGN. SIP＇s net elements, message mechanism and supports for multimedia communications are summarily introduced. Based on SIP protocol, a design of an IP telephone system has been explained. The system＇ s working process, protocol＇ s realization, techniques to ensure QoS and security mechanism have also been discussed. The system not only has wide applicability, outstanding expansibility, high intelligence, but also can be operated and maintained expediently.
出处
《信息工程大学学报》
2005年第3期56-59,共4页
Journal of Information Engineering University
