18x would have created the early dialog @ UAC. Hence UAC can send BYE/CANCEL on the dialog...
Thanks & Regards, Nataraju A.B. > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:sip-implementors- > [EMAIL PROTECTED] On Behalf Of Santosh Reddy > Sent: Wednesday, July 05, 2006 7:31 PM > To: [EMAIL PROTECTED]; [email protected] > Subject: Re: [Sip-implementors] Query on 4xx response to PRACK > > Hi Rahul, > > How can a UAC send BYE without establishing transaction/dialog? > > -Santosh > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Rahul > Sent: Tuesday, July 04, 2006 1:18 PM > To: [email protected] > Subject: Re: [Sip-implementors] Query on 4xx response to PRACK > > The 183 response sent establishes an early dialog. Any request which > generates 4xx response should terminate the dialog i.e the UAC sends a > BYE to terminate the dialog. > Rahul > > > Hi, > > > > I have one doubt. > > Take a scenario where A calls B. B sends 100 Trying and 183 Session > Progress > to ingress side. The ingress side sends PRACK in response to 183. Now B > sends 4xx in response to PRACK. > > Now what happens to the PRACK and what response sent to the INVITE > request > from A. Please find the call flow if you need. > > > > Regards, > > Santosh > > > > _______________________________________________ > Sip-implementors mailing list > [email protected] > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > > > > ___________________________________________________________ > All new Yahoo! Mail "The new Interface is stunning in its simplicity and ease of use." - > PC Magazine > http://uk.docs.yahoo.com/nowyoucan.html > _______________________________________________ > 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
