[SIPForum-discussion] Query about SDP in SIP.

[Deb, Nihar Ranjan]

INVITE is the offer & 200Ok is answer. For detailed reference you can follow RFC 3264 and RFC 3261.
 
 
Regards,
Deb

________________________________

From: discussion-bounces at sipforum.org on behalf of lakhan patel
Sent: Fri 12/4/2009 2:36 PM
To: discussion at sipforum.org
Subject: [SIPForum-discussion] Query about SDP in SIP.


Hi Guys,

Can any one explain me the Offer-Answer in SIP.

1) Initial Invite with Initial-SDP            (Is it Offer? I guess YES).
2) 180 with New-SDP and Require: 100Rel            (Is it new Offer or Answer)
            1. In this I am sending New-SDP1 only with new Version and Session-ID and one A-line and M-line from the Initial-SDP.
            2. In PRACK without SDP.
            3. In 200 Ok for invite with New-SDP1.             (Is it Answer?)
3) Now UPDATE from A-side to B-side with New-SDP2 and again only with new Version and Session-ID and one A-line and M-line from the Initial-SDP.             (What should trigger at B-side).

Can any one [provide me some good reference so that i can read all these from there?

-- 
Thanks & Regards
Shivlakhan Patel
Email: lakhan.p at gmail.com, lakhan.p at hotmail.com 
IBM India Private Ltd. Bangalore
Contact: +91-9902791177

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