MRCP协议V1和V2版实现源代码，这是做TTS和ASR的朋友的好东东。

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

国际上著名的开源项目Bayonne IVR,完全基于电信的语音交互式系统应用.内含源码.-internationally renowned open-source projects Bayonne IVR entirely interactive voice telecommunications systems applications. Intron source.

H.323简要说明-A brief description of H.323

vc编写的sip客户端，配合sip代理服务器一起使用，无需其他库文件，直接编译即可

视频聊天源码服务端-video chat services-source

如何成功的运用OPENH323 来开发商业的H.323 协议栈-how to successfully make use of OPENH323 to develop commercial H.323 protocol stack

网络IP电话 V1.2 (源代码).rar-V1.2 IP telephone network (source code). Rar

VOIP program in VC++, video, voice and other features

自己写的一个点对点的视频电话程序，使用了RTP协议及ffmpeg库-Himself wrote a point-to-point video telephony procedures, using the RTP protocol and ffmpeg library

eXosip is a GPL library that extend the capability of the oSIP library. It aims to implement a simple high layer API to control the SIP for sessions establishements and common extensions.