Parlay APIs与SIP间呼叫相关概念映射的研究  

The Study of the Mapping of Call Concepts Between Parlay APIs and SIP

作　　者：韩艳峰[1] 卢美莲[1] 

机构地区：[1]北京邮电大学网络与交换国家重点实验室,北京100876

出　　处：《北京邮电大学学报》2005年第2期59-62,共4页Journal of Beijing University of Posts and Telecommunications

基　　金：华为基金项目(YJIN2003001);国家"863"计划项目(2003AA121220)

摘　　要：对ParlayAPIs(parlayapplicationprogramminginterface)和SIP(sessionmitiationprotocol)协议中与呼叫相关的概念进行了分析和比较,得出了ParlayAPIs呼叫控制SCF(servicecapabilityfeature)中Call和CallLeg与SIP中Dialog的概念及相关参数的映射关系,进而提出了SIPServer工作在Proxy、B2BUA(back-to-backuseragent)及第三方控制模式下的ParlayAPIs呼叫控制SCF与SIPServer的呼叫概念映射模型.该模型为Parlay方法和参数与SIPServer操作和消息的进一步映射提供了前提和基础,为实际工程中,NGN(nextgenerationofnetwork)的Parlay网关中呼叫控制部分的设计与实现提供了指导作用.The concepts related with call in parlay application programming interface(Parlay APIs) and session mitiation protocol(SIP) are analyzed and compared. A mapping relationship between the concepts of Call and Call Leg in Call Control service capability feature(SCF) of Parlay APIs and the concept of Dialog in SIP is given, including a mapping of related parameters of these concepts. Call concepts mapping models are proposed, in condition that SIP Server works at Proxy mode, B2BUA mode and 3rd Party controller mode. These models work as a precondition and base of mapping methods and parameters of Parlay APIs to operations and messages of SIP Server, performing a directing function for designing and developing Parlay Gateway in practical project of next generation of network(NGN).

关 键 词：PARLAY APIS SIP 映射 呼叫 呼叫腿 对话 

分 类 号：TN915.05[电子电信—通信与信息系统]