hello nitin,, you can not increase session version. session version can only be incremented. as per RFC 4566 "<sess-version> is a version number for this session description. Its usage is up to the creating tool, so long as <sess-version> is
increased when a modification is made to the session data. Again, it is RECOMMENDED that an NTP format timestamp is used." Also to answer your question if there is an answer in 183 and 200 both. So in this case sdp in 200(same as in 183) ok wil be ignored. i hope that answers your question. On Wed, Mar 9, 2011 at 1:05 PM, Johan DE CLERCQ <j.decle...@vocalcom.be>wrote: > I don't know if there's a document about this, but in my opinion you will > not encounter any problem with the incrementation. > > From: sip-implementors-boun...@lists.cs.columbia.edu [mailto: > sip-implementors-boun...@lists.cs.columbia.edu] On Behalf Of Nitin Kapoor > Sent: woensdag 9 maart 2011 8:25 > To: sip-implementors@lists.cs.columbia.edu > Cc: s...@ietf.org > Subject: Re: [Sip-implementors] Different SDP Session Version in 183 & 200 > OK - Email found in subject > > > Hello All, > > Could any one please help me out on requested query as below. > > Thanks, > Nitin > > On Tue, Mar 8, 2011 at 4:48 PM, Nitin Kapoor <nitinkapo...@gmail.com> > wrote: > > > Dear All, > > > > I have one call scenario where my termination is sending the SDP in 183 > as > > well as in 200 OK also. As far as i know if we are getting SDP in 183 > > session progress then my UAC can ignore the SDP in 200 OK. Also most of > the > > time SDP is same. > > > > But here i noticed the slight difference of "Session Version". Here when > my > > termination is sending 188 Session Progress with SDP is sending the SDP > as > > below. > > > > I can see that my Termination is incrementing "*Session Version*" for > > SDP in 183 & 200 OK in same dialog.. > > > > *183 with SDP* > > > > S_OWNER : o=TLPMSXP2 22660 *22660* IN IP4 69.90.230.210 > > S_NAME : s=sip call > > S_CONNECT : c=IN IP4 69.90.230.217 > > TIME : t=0 0 > > M_NAME : m=audio 59072 RTP/AVP 18 4 8 98 > > > > 200 OK with SDP: > > > > S_OWNER : o=TLPMSXP2 22660 *22661* IN IP4 69.90.230.210 > > S_NAME : s=sip call > > S_CONNECT : c=IN IP4 69.90.230.217 > > TIME : t=0 0 > > > > Could anyone please let me know if that is okay to increment the session > > version and if any supported document is there? > > > > Thanks, > > Nitin > > > _______________________________________________ > Sip-implementors mailing list > Sip-implementors@lists.cs.columbia.edu > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > > ________________________________ > > Geen virus gevonden in dit bericht. > Gecontroleerd door AVG - www.avg.com<http://www.avg.com> > Versie: 10.0.1204 / Virusdatabase: 1497/3492 - datum van uitgifte: 03/08/11 > _______________________________________________ > Sip-implementors mailing list > Sip-implementors@lists.cs.columbia.edu > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
