一个基于cSharp语言开发的简单的聊天软件，能实现客户端与服务器之间的正常通信。-CSharp language based on the development of a simple chat software, to achieve client and server communication between the normal.

C#开发sip代码，使用第三方dll“Independentsoft.Sip.dll”的例子。-This example shows you that you can use SIP .NET to create SIP client applications to communicate directly without to use a SIP server. Following sample application is simple messenger with feature to s