[Users] BYE before 200 OK?

[Michael Ulitskiy]

Yes, you got it right.
UAC has never received 200 OK for INVITE and had nothing to ACK.

Michael

On Friday 02 September 2005 02:47 pm, Bogdan-Andrei Iancu wrote:
> Hi Iqbal
> 
> If I got the diagram right and it's about question 1, the 200  OK is for 
> BYE, so there is no ACK
> 
> regards,
> bogdan
> 
> Iqbal wrote:
> 
> > to the 200 OK the UAC should send a ACK
> >
> > Iqbal
> >
> > Michael Ulitskiy wrote:
> >
> >> This is what I though it should look like. Nonetheless they're 
> >> sending BYE right after 183 and I'm wondering if I should complain
> >> about it or this is something I overlooked in SIP specification.
> >> Also I didn't get which ACK do you mean? As you can see the
> >> only ACK in this session is very last ACK and I thought that session
> >> should be ended after I replied 200 OK to their BYE.
> >>
> >> Michael
> >>
> >> On Friday 02 September 2005 01:54 pm, Iqbal wrote:
> >>  
> >>
> >>> no BYE should occur, after 200 OK, your UAC should send ACK to 
> >>> openser, and openser  ACK to gateway, it seems as if the pstn GW is 
> >>> not getting the ACK's
> >>>
> >>> Iqbal
> >>>
> >>> Michael Ulitskiy wrote:
> >>>
> >>>   
> >>>
> >>>> Hello,
> >>>>
> >>>> Can someone please enlighten me on if this is allowed to send BYE
> >>>> before 200 OK? I thought that BYE should be used only after dialog
> >>>> established, but now I have a SIP PSTN termination provider and they
> >>>> appear to be sending BYE with route headers right after 183 Session 
> >>>> Progress
> >>>> in some cases.
> >>>> So the session looks like the following:
> >>>> UAC                                OpenSER 
> >>>> PSTN                       Provider UAS
> >>>> INVITE to openser
> >>>>                                        180 Trying back to UAC
> >>>>                                        INVITE to UAS
> >>>>                                                                                               
> >>>> 180 Trying back to openser
> >>>>                                                                                               
> >>>> 183 Session progress back to openser
> >>>>                                      183 Session Progress back to UAC
> >>>>                                                                                               
> >>>> BYE to openser with Route headers
> >>>>                                      BYE to UAC (loose_routing)
> >>>> 200 OK to openser
> >>>>                                      200 OK to UAS
> >>>> Is it ok?
> >>>> And there's even more to it. I don't know if above is OK or not, 
> >>>> but I would thought that now the session is ended. Nonetheless in 
> >>>> exactly 50 seconds I'm getting
> >>>>                                                                                                 
> >>>> 183 Session progress back to openser
> >>>>                                      183 Session progress back to UAC
> >>>> -- in another 60 seconds
> >>>>                                                                                                  
> >>>> 183 Session progress back to openser
> >>>>                                      183 Session progress back to UAC
> >>>> -- this happens 6 times every 60 seconds and then
> >>>>                                                                                                  
> >>>> 408 Request Timeout back to openser
> >>>>                                       ACK to UAS
> >>>>                                       408 Request Timeout to UAC
> >>>> ACK to openser
> >>>>
> >>>> Do you think it's a provider bug? Another question is how openser 
> >>>> is routing replies that cannot be matched to transaction
> >>>> as I think transaction has already been deleted after BYE and 
> >>>> latest 183 replies were routed
> >>>> by some other principle. Could please someone comment on this?
> >>>> Thanks,
> >>>>
> >>>> See you later,
> >>>>                   Michael
> >>>>
> >>>> _______________________________________________
> >>>> Users mailing list
> >>>> Users at openser.org
> >>>> http://openser.org/cgi-bin/mailman/listinfo/users
> >>>>
> >>>> .
> >>>>
> >>>>
> >>>>
> >>>>     
> >>>
> >>
> >>  
> >>
> >
> > _______________________________________________
> > Users mailing list
> > Users at openser.org
> > http://openser.org/cgi-bin/mailman/listinfo/users
> >
> 
> 

-- 
See you later,
                    Michael