mmax232的详细介绍，有兴趣的可以参看以下，很有用的。-details of max232 interest can be found in the following useful.

美信实现的Rtsp协议栈，包含服务器和客户端，对学习rtsp协议和多种音视频格式的标准rtp打包，具有很强的参考价值-Rtsp protocol stack which achieve by Maxim, including the server and the client,To study rtsp protocol and standard rtp package of many audio and video format,it has a strong reference value