openh323 通用库，用到pwlib

分网络传输部分、音频输入、音频输出、视频输入、视频输出、音频视频压缩、音频波形显示、界面。共创建个线程，音频输入线程、音频输出线程（这两个有WINAPI隐式创建）、音频视频压缩传送线程和主线程。因为音频的采样率比视频采样率高得多，这里的音频的采样率为8000Hz而视频仅为20左右，所以从宏观来看，音频是连续的，而视频是非连续的，这也就是无须为视频输入输出创建独立线程的原因。- Minute network transmission part, audio frequency input, audio frequency output, video input, video output, audio frequency video frequency compression, audio frequency profile demonstration, contact surface. Altogether founds the line regulation, the audio frequency input line regulation, the audio frequency output line regulation (these two has WINAPI to hide type to found), the audio frequency video frequency compression transmission line regulation and the master line regulation. Because the audio frequency sampling rate is much higher than the video frequency sampling rate, here audio frequency sampling rate is 8000Hz but the video frequency is only about 20, therefore from macroscopic looked, the audio frequency is continual, but video frequency right and wrong continual, this also

Low Rate 语音压缩 -Low Rate voice compression algorithm

电子白板实现，java实现，欢迎指正，-Whiteboard realize, java realize, please correct me,

voip 语音编码方式一种G.729源代码，相关算法可以提供研究。-voip voice encoding a G.729 source code, related algorithms can provide research.

sip开源协议 sip开源协议-sip protocol sip open source open-source agreement

It s an introduction to the most popular opensource calling card platform.Its is fair to say that A2Billing when combined with Asterisk is is now a full featured telecom platform

AWAG经过ISDN拨叫一个号码并且传送一个消息。它还可以拨叫另外一个号码如果第一个号码不通或者没有人接听电话。-AWAG ISDN dial a number and send a message. It can also dial another number if a number of unreasonable or nobody answered the phone.

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

用ASP和数据库结合编程制作的超级视频会议系统(价值十万),功能齐全,界面友好-ASP and database programming produced by the combination of the Super Video Conference System (worth 100,000), fully functional, user-friendly

vc编写的sip代理服务器,无需其他的库，直接编译-vc prepared sip proxy server, no additional library is directly compiled