SIP RFC协议标准,只可惜是 英文版的，可做参考

eXosip-2.3.0.1：eXosip最新版本，配合Osip使用-eXosip- 2.3.0.1 : eXosip latest version, with the use of Osip

ITU的g729a编码库，可以将pcm转化为g.729格式-ITU G729 annex A lib file ,can transfer PCM file format to G729 format.

一本学习中文协议阅读的手册，里面详细介绍了osip协议阅读的结构和使用方法，是一本不错的手册。

国外牛人用C++编写的voip的库文件，多媒体实时流传输协议（RTP/RTCP）lib包,平台要求(linux,unix,windows)用于网络音频视频传输-foreign cattle with a C voip prepared by the Treasury, the documents, multimedia real-time streaming protocol (RTP/RTCP) lib packages, platform requirements (Linux, Unix, windows) for audio and video transmission network

MPlayer-mingw32-1.0rc1.zip

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.

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.

rtpbreak 将语音数据从抓取的包中提取出来.-rtpbreak voice data from the extracted package to crawl out.

自己动手写的sip协议栈，SIP（Session Initiation Protocal）称为会话初始化协议，是由IETF（Internet Engineering Task Force）组织于1999年提出的一个基于IP网络中实现实时通信应用的一种信令协议。-Do-It-Yourself wrote sip protocol stack, SIP (Session Initiation Protocal) known as the Session Initiation Protocol is the IETF (Internet Engineering Task Force) organization in 1999 as a network-based real-time IP communications applications a letter the agreement.

基于语音传输的电话会议系统源代码，非常值得借鉴和学习-Based on voice over the telephone conferencing system source code, very much worth learning and learning