rtsp初学者可以参考。 但是是基于ipv6的。-rtsp beginners can refer to it. But it is based on ipv6.

ipv6 免费用电脑在线打电话\coolsip.zip-ipv6 free phone calls using online computer \ coolsip.zip

sip服务器原代码,要求在linux或者unix下安装,可以用于建立自己的voip系统,基于sip协议-OpenSIPS brings: robust and performant SIP (RFC3261) Registrar server, Location server, Proxy server and Redirect server small footprint- the binary file is small size, functionality can be stri