Hi Invite without SDP is initiation of late media. In that case 18x response can have a complete offer or 200 OK can have an offer with ack containing answer. More details are mentioned in RFC 3264 and 3261
Reg Sai On Wed, Jan 4, 2012 at 8:39 PM, Kumar, Hemanth <[email protected]> wrote: > Hi, > > What should be the behavior of UAC when an INVITE is sent without offer > and Require 100rel and it receives non-reliable/reliable 18x response > without SDP? > > Should the transaction be terminated by sending CANCEL? > > The same scenario was given as comment which has not been addressed in > offer/answer draft-ietf-sipping-sip-offeranswer-03 > > > http://www.softarmor.com/sipping/process/wg-review/reviews/draft-ietf-sipping-sip-offeranswer-03-seth.txt > > " 3. Section 1.1 : > Comment :- We should define the behavior for a UAC which sends out an > INVITE without SDP and receives the first non-failure reliable response > without an Offer, due to the UAS not conforming to the draft. As this > being an open point can lead to multiple different implementations. Does > the UAC clear the call or send a PRACK and wait for the offer in > subsequent reliable responses." > > > _______________________________________________ > Sip-implementors mailing list > [email protected] > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > -- With Regards Sairam _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
