基于SIP的IP可视电话设计与实现

Design and Implementation of A SIP Based IP Video Phone

介绍了一种基于SIP的IP可视电话的设计和实现方法。该可视电话利用SIP以及相关的SDP、RTP等开放性协议,完成了通讯双方实时的语音和视频信息的交互。既可以应用到即时通讯方面,也可以作为视频会议实现的基础。在一个开源的SIP协议栈oSIP的基础上,讨论了SIP可视电话的总体结构及各个组成模块,并详细地阐述了各个组成模块的设计与实现方法。结果表明,该可视电话完成了设计所要求的功能。

The design and implementation methods of a SIP based IP video phone are introduced.This video phone is implemented based on open protocols including SIP,SDP,RTP etc,in order to complete instant message exchange of audio and video stream,it can not only be used for IM,but also for IP phone systems.Session Initiation Protocol (SIP) and oSIP are briefly introduced,an open source SIP stack and the overall structure of SIP based IP video phone are also introduced,and the design and implementation of each module are presented.The result indicates this video phone conforms to the requirements.