说明：  SIP多媒体网络模型在Windows平台上的实现-：SIP多媒体网络模型包括各种类型的SIP服务器及SIP终端。文章分析了SIP协议的特点和优势，描述了Windows平台上SIP多媒体网络的构架，提出了多用途SIP服务器的实现以及SIP终端的实现过程
(SIP multimedia network model in the Windows platform to achieve-: SIP multimedia network model includes various types of SIP servers and SIP terminal. The article analyzed the SIP features and advantages, Description of the Windows platform SIP multimedia network architecture, a multi-purpose SIP server and SIP terminal achieve the realization process)