北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2005, Vol. 28 ›› Issue (2): 58-62.doi: 10.13190/jbupt.200502.58.hanyf

• 论文 • 上一篇    下一篇

Parlay APIs与SIP间呼叫相关概念映射的研究

韩艳峰,卢美莲   

  1. 北京邮电大学 网络与交换国家重点实验室, 北京 100876
  • 出版日期:2005-04-28 发布日期:2005-04-28

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

HAN Yanfeng,LU Meilian   

  1. State Key Laboratory of Networking and Switching, Beijing University of Posts a nd Telecommunications, Beijing 100876, China
  • Online:2005-04-28 Published:2005-04-28

摘要: 对Parlay APIs(parlay application programming interface)和SIP(session mitiation p rotocol)协议中与呼叫相关的概念进行了分析和比较,得出了Parlay APIs呼叫控制SCF(ser vice capability feature)中Call和Call Leg与SIP中Dialog的概念及相关参数的映射关系 ,进而提出了SIP Server工作在Proxy、B2BUA(backtoback user agent)及第三方控制 模式下的Parlay APIs呼叫控制SCF与SIP Server的呼叫概念映射模型。该模型为Parlay方法 和参数与SIP Server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(next generation of network)的Parlay网关中呼叫控制部分的设计与实现提供了指导作用。

关键词: Parlay APIs, SIP, 映射, 呼叫, 呼叫腿, 对话

Abstract: 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, perf orming a directing function for designing and developing Parlay Gateway in practical project of next generation of network(NGN).

Key words: parlay application programming interface, session mitiation protocol, mapping, call, call leg, dialog

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