摘要： 随着Internet技术和计算机通信技术迅速发展,传统的基于电路交换的网络必将向基于包交换的新一代网络演进。该文针对三网合一发展趋势和现状,提出了基于SIP协议的分布式VoIP系统模型。该模型充分结合了SIP协议和IP网络的特点,既维持了VoIP与现有网络的互联互通, 也为VOIP适应未来新一代网络的发展提供一个可扩展的平台。该模型以公共VoIP专网的方式解决目前面临的QoS问题。

关键词: SIP, NGN, VOIP, QoS, OSP, 清算中心

Abstract: With the development of the Internet technologies and computer communication technologies, the traditionary circuit-switch based network must evolves to the new generation network which is based on the packet-switch technology. Facing the progress and status of the convergence of the three-networks, This document presents a distributed and SIP protocal based VoIP system prototype. Due to combinating of merits of SIP and IP, this model not only provides the interoperation with the existed network, but also provides an extendable plat for the NGN. This model uses private VoIP network to achieve the QoS.

中图分类号: 

• TN916.2