UDP穿透程序，对于搞音视频会议类软件的网友可以参考参考学习...

这是一篇关于sip协议介绍的文章,主要讲述了3个协议:sip,sdp,sap协议的工作原理,值得研究-This is a sip of agreement on the article, the story of three agreements : sip, sdp, sap the working principle of the agreement, worth studying

这是voip一个部分,主要是用来做的数据代理,-This is a part of voip is primarily used to do data agents,

这是voip网关h.323到gateway的程序代码-This is voip gateway H.323 gateway to the code

主要通过对SIP协议的研究，根据这个协议的特点，设计出来一个基于SIP电话会议系统。用户可以通过WEB方式登录到预先建立好的会议室，进行电话会议。-primarily through the SIP, according to the characteristics of this agreement, designed a SIP-based telephone conferencing system. Web users can log on to advance ways to establish good meeting rooms, conference calling.

对STP协议的介绍，详细介绍了结构，以及如何实现-STP agreement on the introduction, detailing the structure, and how to realize

关于视频会议的好-video conferencing on a good Dongdong

一个H323动态库使用的例子-a dynamic example of the use of

一个流媒体的开发源代码C语言函数库，看了就知道。-a Streaming Media Development C language source code libraries, read on to know.

应用背景This section shows and describes a call flow for a successful call using the Cisco ATA and MGCP. Note :The term Cisco ATA refers to both the Cisco ATA 186 and the Cisco ATA 188, unless otherwise stated. 关键技术Figure C-1 on page C-2 illustrates a basic call flow between two Cisco ATAs through a VocalData Call Agent. Table C-1 on page C-3 describes the action the Cisco ATA takes for each step in the call flow illustration and includes the log created by each step.

点对点视频会议程序:VideoNet 该程序可以用于两个人在LAN/Intranet(或者Internet)上进行视频会议。现在有许多视频会议程序，每个都有各自的性能提升技术。主要的问题是视频会议视频帧的尺寸对于传输来说太大。因此，性能依赖于对帧的编解码-point-to-point video conferencing : VideoNet the two procedures can be used in LAN/Intranet (or Intern et) on video conferencing. Now there are many video conference proceedings, each have their own performance enhancements. The main problem is video conferencing video frame size too large for transmission. Therefore, the performance depends on the right frame codec