可以直接用VC进入修改编译的基于语音卡上的开发平台，有流程的图形编辑器...

This project contains a SIP stack and server applications built on top of the stack, examples of which are: Stateless Proxy, Registrar,NAT Keepalives,MWI Notifier server. The server applications have been designed to work in association with Asterisk. -This project contains a SIP stack and server applications built on top of the stack, examples of which are: Stateless Proxy, Registrar, NAT Keepalives, MWI Notifier server. The server applications have been designed to work in association with Asterisk.

OReilly - Practical VoIP Using VOCAL.doc-OReilly- Practical VoIP Using VOCAL.doc

一个不错的视频传输系统,实现了视频的采集与传输.

H323到PSTN的网关 -Gateway from H323 to PSTN

Linux下开发的一款网络电话-Linux built a network phone

关于VOIP系统的详细介绍，有助于VOIP系统的设计-on VOIP detailed description of the system, contribute to the design of VOIP System

VOIP，VOIP Software Architecture-VOIP, VOIP Software Architecture

RealNetworks公司的Helix 的协议部分源码．-RealNetworks Helix source part of the agreement.

网络视音频系统主要功能就在于视音频的采集，网络传输两个方面，通过Video Capture系列API函数，你就可以轻松的搞定视频捕捉，但是对于视频的网络传输，则要费一番功夫了。-Network as the main functions of audio systems is that video and audio collection, two aspects of network transmission, through the Video Capture Series API function, you can easily get video capture, but for network video transmission, will cost some effort has been.

asterisk 电话未来之路 一本非常有意义的数据 中文asterisk文档 对做voip 和PBX的朋友们有很大帮助-Future of asterisk phone a very meaningful data to make Chinese asterisk documents voip and PBX friends are very helpful