Programming SIP Services - The SIP APIS

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The Session Initiation Protocol (SIP) is a signalling protocol developed to set up, modify and tear down multimedia sessions such as voice and video calls, game sessions, messages exchange and the like over the Internet Protocol (IP). A few of protocols have been design for it. However, the SIP seems to be the most relevant protocol with the future. That's all thanks to its manifold features. One of the most interesting is the Internet approach for programming new service. There are a couple of options that can be used for creating new SIP services. To create a service using the SIP, the authors should use SIP baseline protocol mechanisms.