Hi, >My understanding is that if the SDP in the 200(Invite) has a >different version in the "o" line than the previous SDP then >the new SDP is a new Offer. The UA receiving this SDP should >respond with SDP answer in the ACK message.
The only problem is that it is not allowed to send a new offer in the 200. A SIP transaction can contain at-most ONE offer/answer transaction. Regards, Christer > --------------------------------------- > Meir Leshem > Veraz Networks > Tel: +972-3-9709107 > Fax: +972-3-9709442 > Mobile: +972-54-9709107 > --------------------------------------- > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf > Of Sanjay Sinha (sanjsinh) > Sent: Wednesday, February 14, 2007 8:37 PM > To: Nebojsa Miljanovic; [email protected] > Subject: Re: [Sip-implementors] SDP in 2xx response after reliable 18x > > > Option 2 does not seem correct. Option 1 is correct and you > may also want to ignore the sdp in 200 OK, just treat it as > if there was no sdp in 200 OK. > > Sanjay > > >-----Original Message----- > >From: [EMAIL PROTECTED] > >[mailto:[EMAIL PROTECTED] On Behalf > Of Nebojsa > >Miljanovic > >Sent: Wednesday, February 14, 2007 12:30 PM > >To: [email protected] > >Subject: [Sip-implementors] SDP in 2xx response after reliable 18x > > > >Trying to get a feel on how various developers interpret RFCs 3261, > >3262 and 3264. > > > >If you are acting as an UAC and you have received SDP in > reliable 18x > >response (i.e. PRACK was used), and then again that same SDP > comes in > >2xx, what will you do? > > > >1. Verify that 18x and 2xx SDPs are the same and accept it. > > > >2. Tear down the call since you consider SDP in 2xx as an invalid > >Offer. > > > > > >Also, do you know of any UAs that require 2xx to contain SDP > even after > >Offer/Answer was done with 183/PRACK. > > > >Thanks. > > > > > > > > > >_______________________________________________ > >Sip-implementors mailing list > >[email protected] > >https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > > > > _______________________________________________ > Sip-implementors mailing list > [email protected] > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > > _______________________________________________ > Sip-implementors mailing list > [email protected] > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
