Abstract: Mapping between Parlay Application Programming Interface (API) and network protocol is the keystone in the realization of Parlay-based services. This paper focused on Session Initiation Protocol (SIP), researched the mapping problem of Parlay and SIP, designed and realized the model of SIP message mapping in Parlay gateway, testified the mapping model by the testing environment. Testing results prove the mapping model has bidirectional mapping function between Parlay and SIP, as well as high feasibility and maneuverability.

Key words: Parlay/Open Service Access (OSA), Session Initiation Protocol (SIP), CORBA, mapping

摘要： Parlay API和底层网络协议之间的映射是实现基于Parlay业务的关键，以SIP协议为对象，研究了Parlay与SIP协议之间的映射问题，设计与实现了Parlay网关中的SIP协议消息映射模型，并通过搭建的测试环境对该模型的功能进行了验证，测试结果说明该模型具有Parlay与SIP之间的双向映射功能，具有较高的可行性与可操作性。

关键词: Parlay/开放业务接入, 会话初始协议, CORBA, 映射