VaxSIPUserAgentSDK，一个SIP软电话的SDK包。-VaxSIPUserAgentSDK, a SIP soft phone SDK package.

vaxsip协议栈的全套开发文档，lib，ocx，cab，以及demo和实例-vaxsip protocol stack to develop a complete set of documents, lib, ocx, cab, as well as the demo and example