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Transcript of network project
Ahmad S. Warrad
Dema G. Abu Sammour
Al-Motasem Billah H. Badawe
Ahmad A. Alrefai
Dr. Khalid Matrouk
Functionality Provided by SIP
SIP Network (Entities & Network elements)
Commands of SIP
Good Features of SIP
Format of SIP Messages
Reference List Content The Internet multimedia conferencing architecture encompasses many protocols. These were not all developed at the same time. Beginning with the first multimedia systems, this architecture were dynamically evolving new protocols were designed and existing protocols were improved. As time went by, the Internet stretched to provide more and more multimedia services. Yet this architecture still had a missing piece, it did not have a way to explicitly invite users to join a particular session. SIP History A multicast session could be announced using Session Announcement Protocol (SAP), for instance, but it was up to the potential receiver to check through all of the announced sessions periodically to find one he or she wanted to join. It was impossible for one user to inform another user about a session and invite him or her to participate. Suppose some one watching an interesting movie being multicast, and he recall a friend who would probably also be interested in seeing it. He needs a simple means to alert his friend, send her a description, and invite her to join the session (Figure 1).