晕，VoIP用来穿透NAT的一种方式，通过三个基本的NAT

用于Voip的MySQL数据库接口函数库，很有用处。-for the MySQL database interface functions, the very useful.

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

该视频会议源代码,实现功能强大,比传统视频会议算法更优,减少带宽-The video-conferencing source code, to achieve powerful, than the traditional video conferencing better algorithm to reduce the bandwidth

这个项目是一个简单的sip-Voip软电话客户端你只要配置你的sip服务器名称和传递字和代理，然后你必须知道你的客户端的所有IP地址，并有乐趣与你的朋友打电话，你也有开放的源代码，使你想做什么样的改变。祝你好运

介绍通过无线环境来传输语音的一本英文原版书籍，这里用到得无线协议是802.11 -introduced through wireless environment to transmit voice of an English original books, here used in the 802.11 wireless protocol is

一个可以在PPC上运行的sip客户端的源代码,使用基于osip,exosip,ortp,mediastreamer的库-A PPC can be run on sip client source code, use-based osip, exosip, ortp, mediastreamer library

IP电话会议系统，支持多人会议，分为Clien和Server两部分，并附有UML设计.-IP telephone conference systems to support people, Client and Server divided into two parts. together with UML design.

一个linux下的高速sip router-a sip of high-speed router

权威的skype协议分析，详细分析skype的网络结构、防火墙穿越方法、编解码等实现细节。-authority of the agreement, skype detailed analysis of the network structure, through the firewall, such as codecs achieve details.

VIS H.323 Library ActiveX version 2.3 正式版-VIS ActiveX version H.323 Library version 2.3