Hi Vivek, Here the issue is media is not in sync. If UAS is not providing the SDP in answer, how UAC can ensure whether the ongoing media is reliable anymore and if the session is not reliable, it should not be continued.
Thanks, Alok Tiwari On Thu, Dec 4, 2014 at 2:50 PM, Banda, Srinivas (Srinivas) < sriba...@avaya.com> wrote: > Hi Vivek, > > RFC 3264 says, if Re-INVITE fails (Ex : 4xx or 5xx any other error) UAC > should switch back to the state which has before sending the Re-INVITE. > Here Re-INVITE is not failing, it has 200 OK but no media. So UAC has no > other option so terminating the call with BYE. > > Regards > Srinivas > > -----Original Message----- > From: sip-implementors-boun...@lists.cs.columbia.edu [mailto: > sip-implementors-boun...@lists.cs.columbia.edu] On Behalf Of Vivek Batra > Sent: Thursday, December 04, 2014 2:47 PM > To: Alok Tiwari > Cc: sip-implementors > Subject: Re: [Sip-implementors] ReINVITE offer answer failure > > Hi all, > > Just thinking widely if it's violating the SDP offer/answer in ReINVITE, > then why to terminate the complete dialog instead of clearing only specific > transaction... > > Best Regards, > Vivek Batra > > > On Thu, Dec 4, 2014 at 2:42 PM, Alok Tiwari <alo...@globallogic.com> > wrote: > > > Hi Tarun, > > > > IMO, this behavior is correct as it violates the offer-answer model. > > The answer must have overlapped SDP. But in mentioned scenario, the > > media at UAC and UAS is not in sync and therefore UAC should terminate > > the dialog in such scenario. > > > > Thanks, > > Alok Tiwari > > > > > > On Thu, Dec 4, 2014 at 12:50 PM, Tarun2 Gupta > > <tarun2.gu...@aricent.com> > > wrote: > > > > > Hi > > > > > > Our implementation is clearing the call on receiving no SDP (answer) > > > in > > > 200 OK for a ReINVITE with SDP (offer) sent. Is this (call clearing) > > > the recommended behavior? > > > I am not able to find any normative RFC references to support this. > > > Can you please help here? > > > > > > Regards > > > Tarun Gupta > > > > > > "DISCLAIMER: This message is proprietary to Aricent and is intended > > solely > > > for the use of the individual to whom it is addressed. It may > > > contain privileged or confidential information and should not be > > > circulated or > > used > > > for any purpose other than for what it is intended. If you have > > > received this message in error, please notify the originator > > > immediately. If you > > are > > > not the intended recipient, you are notified that you are strictly > > > prohibited from using, copying, altering, or disclosing the contents > > > of this message. Aricent accepts no responsibility for loss or > > > damage > > arising > > > from the use of the information transmitted by this email including > > damage > > > from virus." > > > _______________________________________________ > > > Sip-implementors mailing list > > > Sip-implementors@lists.cs.columbia.edu > > > https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors > > > > > > > > > > > -- > > Alok Tiwari | Consultant > > GlobalLogic > > P +91.120.406.2000 x 2477 M +91.991.034.7139 S alo...@globallogic.com > > <http://alok.t_globallogic.com/> www.globallogic.com > > <http://www.globallogic.com/> > > http://www.globallogic.com/email_disclaimer.txt > > _______________________________________________ > > Sip-implementors mailing list > > Sip-implementors@lists.cs.columbia.edu > > https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors > > > > > > -- > Best Regards, > Vivek Batra > _______________________________________________ > Sip-implementors mailing list > Sip-implementors@lists.cs.columbia.edu > https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors > -- Alok Tiwari | Consultant GlobalLogic P +91.120.406.2000 x 2477 M +91.991.034.7139 S alo...@globallogic.com <http://alok.t_globallogic.com/> www.globallogic.com <http://www.globallogic.com/> http://www.globallogic.com/email_disclaimer.txt _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
