Ajay, This issue is discussed recently in one of the threads. Please refer to this link.
http://lists.cs.columbia.edu/pipermail/sip-implementors/2005-February/thread.html with subject as "Ringing time -- Endpoint or Network". With regards Somesh S. Shanbhag --- Idnani Ajaykumar-AIDNANI1 <[EMAIL PROTECTED]> wrote: > Hi All, > > I was reading section 17.1.1.2 of RFC 3261 and I had > some basic questions, so I thought I will ask the > experts. > > 1. What is the UAC supposed to do when it is in the > Proceeding state and it does not receive any final > response? The text in section 17.1.1.2 does talk > about this case. Also when I look at the flow in > Firgure 5, there seems to be no timer attached to > get out of the 'Proceeding' state. There is one > attached to 'Calling' (Timer B) and 'Completed' > (Timer D) states, but none to 'Proceeding' state. So > are we saying that once you get into Proceeding > state and the other end fails for some reason, the > UAC is stuck. > > Or is the figure inaccurate and it should really > show a Timer B associated with one of the arrows > coming out of that state? In which case my questions > would be does a provisional response reset this > timer? Otherwise an INVITE transaction would be > constrained to 32secs assuming a T1 of 500ms (i.e. a > call should go from 'Calling' to 'Completed' in > 32secs! > > Appreciate your responses. > > Thank you. > - Ajay > _______________________________________________ > Sip-implementors mailing list > [email protected] > http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors > __________________________________ Do you Yahoo!? Yahoo! Sports - Sign up for Fantasy Baseball. http://baseball.fantasysports.yahoo.com/ _______________________________________________ Sip-implementors mailing list [email protected] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
