[SIPForum-discussion] Query about SDP in SIP.

[Garron, James]

Here is a draft that ties 3261, 3262, 3264 and 3311 which helps better
describe offer answer in your scenario.

 

http://tools.ietf.org/id/draft-ietf-sipping-sip-offeranswer-10.txt

 

 

________________________________

From: discussion-bounces at sipforum.org
[mailto:discussion-bounces at sipforum.org] On Behalf Of Deb, Nihar Ranjan
Sent: Monday, December 07, 2009 12:31 AM
To: lakhan patel; discussion at sipforum.org
Subject: Re: [SIPForum-discussion] Query about SDP in SIP.

 

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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