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A comparative study of SIP programming interfaces

The Session Initiation Protocol (SIP) is a signalling protocol for Internet Telephony, multimedia conferenc- ing, and instant messaging. The behavior of SIP platforms can be configured thanks to various programming interfaces. In this paper, we present a study of different existing SIP platforms. From this study, we identify key requirements that must be fulfilled by a SIP programming interface. We discuss existing solutions and propose to introduce a language approach to addressing these needs.