[Users] BYE before 200 OK?

[Iqbal]

I stand corrected yes the 200 OK is for the BYE, I misread and thought 
the 200 OK was from UAs to openser, and then from openser to UAC,

Iqbal

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
>>>>>
>>>>> .
>>>>>
>>>>>
>>>>>
>>>>>     
>>>>
>>>>
>>>
>>>  
>>>
>>
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