Hi, Once UAS negotiates media with 180 Ringing. It is not required to send the SDP in 200 OK.
Regards Neehar --- [EMAIL PROTECTED] wrote: > Send Sip-implementors mailing list submissions to > [email protected] > > To subscribe or unsubscribe via the World Wide Web, > visit > > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > or, via email, send a message with subject or body > 'help' to > [EMAIL PROTECTED] > > You can reach the person managing the list at > [EMAIL PROTECTED] > > When replying, please edit your Subject line so it > is more specific > than "Re: Contents of Sip-implementors digest..." > > > Today's Topics: > > 1. Re: Question about 200 OK for INVITE (Paul > Kyzivat) > 2. Re: INVITE with no SDP - provisional response > with SDP > (Paul Kyzivat) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Fri, 06 Jul 2007 13:49:23 -0400 > From: Paul Kyzivat <[EMAIL PROTECTED]> > Subject: Re: [Sip-implementors] Question about 200 > OK for INVITE > To: River <[EMAIL PROTECTED]> > Cc: [EMAIL PROTECTED] > Message-ID: <[EMAIL PROTECTED]> > Content-Type: text/plain; charset=ISO-8859-1; > format=flowed > > For questions like this you should see > http://www.ietf.org/internet-drafts/draft-ietf-sipping-sip-offeranswer-01.txt. > > Paul > > River wrote: > > Hello All, > > > > I have a question about 200 OK for INVITE. > > Let's suppose an UAC sends out an INVITE/SDP, then > the UAS replys with > > 180/SDP and 200 OK for the INVITE. > > Is it compulsory that the 200 OK for the INVITE > also contain SDP (where the > > 180 Ringing already has SDP)? > > Thank you very much! > > > > > > Best Regards, > > River > > _______________________________________________ > > Sip-implementors mailing list > > [email protected] > > > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > > > > > ------------------------------ > > Message: 2 > Date: Fri, 06 Jul 2007 13:56:35 -0400 > From: Paul Kyzivat <[EMAIL PROTECTED]> > Subject: Re: [Sip-implementors] INVITE with no SDP - > provisional > response with SDP > To: Stephen Paterson <[EMAIL PROTECTED]> > Cc: [EMAIL PROTECTED] > Message-ID: <[EMAIL PROTECTED]> > Content-Type: text/plain; charset=ISO-8859-1; > format=flowed > > > > Stephen Paterson wrote: > > Hi all, > > > > Is it at all meaningful for an unreliable 1xx > response to an INVITE to > > contain an SDP body when the INVITE itself did > not? I'm aware of the > > situation in the reliable case. > > It is certainly allowed. > > > I'm rather hoping that this is not allowed for the > sake of making my > > life easier but alas, I suspect it is. > > Why would prohibiting it make your life any easier? > If you are the UAS > you aren't required to send it. And if you are the > UAC you aren't > required to do anything with it. > > > I certainly can't think of any > > use for it as there is no means for the UAC to > provide an answer before > > it receives the final response. > > Well, I guess you could begin transmitting early > media in the forward > direction. But I guess that isn't very useful, since > before answer there > is probably nobody to hear it. > > > I also can't find anything in the RFCs > > that mentions this situation in any way. If I've > missed it, please just > > point me to the relevant section of the RFCs. That > should be all I need. > > I'm not going hunting right now. I don't recall > there being anything > *explicitly* said about this case. But I think it is > allowed on general > principles. > > Paul > > > Thanks > > > > Steve > > > > Steve Paterson > > Software Engineer > > Aculab > > Tel: +44 (0) 1908 273866 > > Fax: +44 (0) 1908 273801 > > Email: mailto:[EMAIL PROTECTED] > > Website: http://www.aculab.com > > > > > > > > Registered Address Lakeside, Bramley Road, Mount > Farm, Milton Keynes, MK1 1PT, UK > > Registration No: 1397386 (Wales) > > P Please consider the environment and don't print > this e-mail unless you really need to > > _______________________________________________ > > 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 > > End of Sip-implementors Digest, Vol 52, Issue 7 > *********************************************** > ____________________________________________________________________________________ Got a little couch potato? Check out fun summer activities for kids. http://search.yahoo.com/search?fr=oni_on_mail&p=summer+activities+for+kids&cs=bz _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
