SIP即简单会话协议的消息流程进行一个程序员级别的讲解，对用要到SIP协议进行网络开发的编程人员会有很大的帮助
SIP protocol explain (2011-08-01, Unix_Linux, 179KB, 下载8次)
yate voip编程库，这是开发voip最好的开源代码，没有这个你讲寸步难行。
yate voip programming library, which is developing the best open source voip, not this tell you move an inch. (2010-08-09, Unix_Linux, 3620KB, 下载15次)
使用JRTPLIB库实现RTP的传输RTP是目前解决流媒体实时传输问题的最好办法，如果需要在Linux平台上进行实时流媒体编程，可以考虑使用一些开放源代码的RTP库，如LIBRTP、JRTPLIB等。JRTPLIB是一个面向对象的RTP库，它完全遵循RFC 1889设计，在很多场合下是一个非常不错的选择，下面就以JRTPLIB为例，讲述如何在Linux平台上运用RTP协议进行实时流媒体编程。
JRTPLIB use of RTP for achieving the transmission RTP is to solve real-time streaming media transmission problems the best way, if necessary on the Linux platform for real-time streaming media programming, can consider using open-source library of RTP, as LIBRTP, JRTPLIB so. JRTPLIB is an object-oriented library RTP, which fully comply with the RFC 1889 design, in many occasions is a very good choice, following on to JRTPLIB example, on how the Linux platform on the use of RTP for real-time streaming media programming. (2005-03-30, Unix_Linux, 8KB, 下载232次)