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

doi:10.13190/jbupt.200502.58.hanyf

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2005, Vol. 28 ›› Issue (2): 58-62.doi: 10.13190/jbupt.200502.58.hanyf

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

HAN Yanfeng,LU Meilian

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

Abstract

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

CLC Number:

TN915.05

HAN Yanfeng,LU Meilian. The Study of the Mapping of Call Concepts Between Parlay APIs and SIP [J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2005, 28(2): 58-62.

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

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