首先说明了SIP服务器和Parlay网关的关系,然后描述了SIP协议映射的功能模型,最后重点提出了实现SIP协议映射中所涉及的SIP服务器设计、Parlay/SIP参数编解码、呼叫对象标识映射等关键技术的解决方案。实践表明,使用该技术能实现屏蔽底层SIP协议,为开发者提供标准的、与协议无关的Parlay API。
Firstly the paper narrates the relationship between SIP ( Session Initiation Protocol) server and Parlay gateway, then the function model of SIP protocol mapping is described, lastly solutions for the key technologies to realize the SIP protocol mapping are proposed, which include the implementation of SIP server, Parlay/SIP parameter encoding and decoding, call object identification mapping etc. The result shows that this technology can shield underlying SIP protocol, provide for developers standard and protocol-independent Parlay APIs.