用Qt4实现的VOD软件。带有一般播放器的功能，支持基于FTP协议的视频传输。-Used to the Qt4 achieve VOD software. With the general functionality of the player, support video transmission based on the FTP protocol.

SIP协议栈，非常少的c#版的，类似c++的pjsip是开源的，同时兼容了底层的stun，upnp，mail，ftp等协议栈-sip stack in c# version ,it is like pjsip ,it is open source in c#,including sip mail stun upnp nat and so on