sip协议中sdp消息姐学习笔记，介绍了sdp消息的组成

应用背景这是利用一些数学运算对信号进行相位计算的算法。关键技术CORDIC算法给出正确的相位值，采用一些计算。 ；

目前网络上面skype很流行,这是一篇详细的分析skype的文章,如果你想研究p2p的电话,那么值得一看-network above skype currently very popular, which is a detailed analysis of skype the article, if you want to research peer-to-peer phone, an eye-catcher

国外牛人用C++编写的voip的库文件，可同时与一并上传在internet中的jrtplib一同研究使用。-voip library by foreigin expert,you may do some research with jrtplib

SIP Stacks dissipate2: C++ Linux, requries the qt-library, License: GPL Homepage: http://www.wirlab.net/kphone/ A enhanced dissipate, is part of the kphone distribution. -SIP Stacksdissipate2: C++ Linux, requries the qt-library, License: GPL Homepage: http://www.wirlab.net/kphone/ A enhanced dissipate, is part of the kphone distribution.

第八章代码，基于实时通信（ＲＴＣ）ＡＰＩ的视频会议系统- Chapter VIII of the code, based on real-time communication (RTC) API of the video conference system

SDP2327，中文版，学习sipHello的同学可以参考一下-SDP2327

视频电话会议全站源码 目前流行的web网页代码-Video and telephone conference-wide stand-source current popular web page code

MPEG4流媒体的视频传输和运程播放代码，VC平台-streaming MPEG4 video transmission and broadcast code leg, VC platform

RTC下接收呼叫的例子（如果是VC用户，请新建一个APPLICATION 32空工程，然后，用ADD FILE的方法把所有的文件包含在工程中编译）-RTC receive calls example (If yes VC users, a new air APPLICATION 32 works, and then use the ADD FILE all the documents included in the project compiler)

实现局域网内点对点的音频通讯，数据编解码使用G.729,16:1的压缩比，数据传输使用UDP协议。音频模块可在公网内经行通讯-LAN communications within the peer-to-peer audio, data, use codec G.729, 16:1 compression ratio, data transmission using the UDP protocol. Audio module can be in the public network through the communication line