[SIPForum-discussion] signaling protocol

[Broussard, Dan]

I sometimes call SIP "glorified instant messenger"
 
It tells two devices how to handle an event via given commands.
 
Invite, bye, info
 
along with coded messages to tell what to do with a call
 
486 = disconnect
 
Meanwhile the actual voice takes a different course via Real Time
Protocol.
 
 
So SIP just carrier all the "signaling information" for the call to tell
the devices how to set up the call and when to tear it back down.
 
 
Hope that helps.
 
Dan Broussard
Level 3 Communications
 
 
 

________________________________

From: discussion-bounces at sipforum.org
[mailto:discussion-bounces at sipforum.org] On Behalf Of harish T
Sent: Monday, January 15, 2007 4:07 AM
To: discussion at sipforum.org
Subject: [SIPForum-discussion] signaling protocol



Can any one tell me why exactly SIP is called as signaling protocol
<http://en.wikipedia.org/wiki/Signaling_protocol>  ?
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With regards
Harish.T 
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