Parlay Multi Media Call Control Services(MMCCS) Application Programming Interfaces (API) based on Session Initiation Protocol (SIP) is essential for the implementation of Parlay Call Control (CC) API. This paper first proposes an implementation model of Parlay MMCCS API based on SIP, then presents a mapping between SIP and MMCCS API as far as methods and parameters are concerned, illustrates corresponding relationships between different components of SIP and MMCCS API by means of an application collaboration diagram, and finally presents an application using Java codes as well as some SIP messages. The application shows that a majority of MMCCS API based on SIP can be implemented and therefore verifies our mapping between MMCCS API and SIP.
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