Abstract
The Session Initiation pProtocol (SIP) is developed to set up, maintain, and tear down the sessions among computers. By working in conjunction with a variety of other protocols and specialized servers, SIP provides a number of important functions that are necessary in allowing communication among participants. SIP provides methods of sharing the location and availability of users and explains the capabilities of the software or device being used. SIP then makes it possible to set up and manage the session among the parties. Without these tasks being performed, communication over a large network like the Internet would be impossible. Beyond communicating with voice and video, SIP has also been extended to support instant messaging and is becoming a popular choice that's incorporated in many of the instant messaging applications being produced. This extension, called SIMPLE, provides the means of setting up a session in much the same way as SIP.SIMPLE also provides information on the status of users, showing whether they are online, busy, or in some other state of presence.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
