tag:blogger.com,1999:blog-24553565028618442492012-02-15T23:58:03.281-08:00Session Initiation Protocolmoderatorhttp://www.blogger.com/profile/08224912418180210266noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-2455356502861844249.post-90040092272725691772009-12-12T06:08:00.000-08:002010-05-15T06:20:59.215-07:00What is SIP ? SIP (Session Initiation Protocol) is a signaling or application layer control protocol which is used to initiate, modify & terminate multimedia (audio, video or voice) session.<br />It can also invite participants to already existing sessions, such as multicast conferences.<br />SIP, in combination with other protocols describes the session characteristics to potential session participants.<br />It supports 5 facets of establishing & terminating multimedia communications<br /><br />These are:<br /><br /><ul><li>User Location: Determination of the end system to be used for communication.</li><li>User Availability: Determination of the willingness of the called party to engage in communications.</li><li>User Capabilities: Determination of media and media parameters to be used.</li><li>Session Setup: Establishment of session parameters at both called & calling party.</li><li>Session Management: This includes transfers & termination of sessions, modifying session parameters and invoking services.</li></ul><div><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/2455356502861844249-9004009227272569177?l=www.sessioninitiationprotocol.info' alt='' /></div><img src="http://feeds.feedburner.com/~r/SessionInitiationProtocol/~4/Gy0fB0VDU1I" height="1" width="1"/>moderatorhttp://www.blogger.com/profile/08224912418180210266noreply@blogger.com0http://www.sessioninitiationprotocol.info/2009/12/what-is-sip.html