首先分析了支持SIP(Session Initiation Protocol)协议映射的Parlay网关和SIP服务器的结构和功能模型.然后描述了MPCC SCF(Multi-Party Call Control Service Capabilty Features)和SIP服务器的具体设计和实现方案.最后以呼叫前转业务为例,给出了组成SIP协议映射的进程类型和功能描述.实践表明,使用本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的目的.
This article firstly analyzes the function model and the structure of Parlay gateway and SIP Server, which support the SIP (Session initiation Protocol) protocol mapping. Then it describes the design and implementation of MPCC SCF (Multi-Party Call Control Service Capability Features) and SIP Server. Finally, taking Call Forwarding on Busy Service as an example, it illuminates the process type and function description of SIP protocol mapping. The reality shows that this technology can shield underlying SIP protocol, and provide developers with standard and protocol-independent Parlay APIs.