A review on Session Initiation Protocol (SIP)

This paper describes Session Initiation Protocol SIP, its evolution, and the architecture for building the session initiation protocol. SIP is an application-layer control protocol for creating, modifying, and terminating sessions with one or more participants. The functionality performed by session initiation protocol includes the determination of location of target point, media capabilities, availability of target point. This paper also includes the responses, requests messages used for effective communication, the transactions handled by session initiation protocol and also describes the header and algorithm used to describe the working of SIP. This paper also provides the difference between various signaling protocols used in IP networks, and describes which is best in what aspect, and how session initiation can be used in real world applications.