[OpenSIPS-Devel] SF.net SVN: opensips:[5835] trunk/modules/pua_dialoginfo

[Adrian Georgescu]

Inaki,

Should the dialog timeout in this case?

Adrian

On Jul 7, 2009, at 3:46 PM, Iñaki Baz Castillo wrote:

> 2009/7/7 Klaus Darilion <klaus.mailinglists at pernau.at>:
>>> PUBLISH "dialog" with "trying" state is in fact a NOOP and it's not
>>> useful at all from the watcher's perspective. I suggest never to
>>> publish it.
>>>
>>> Also, the "proceeding" state means that a 1xx with no To tag (this  
>>> is,
>>> a 100) has been received. This is also not useful, so I wouldn't
>>> publish it.
>>
>> IMO it is useful - eg. A calls PSTN and the call setup takes long -  
>> e.g. 10
>> seconds until "ringing". In this time intervall, A is already busy  
>> on the
>> phone, thus other probably will get notified that A is currently on  
>> the
>> phone and the will try to reach him later.
>
> Othe example:
>
> - A is subscribed to dialog presence of C.
> - B calls C.
> - The proxy generates a dialog "trying" PUBLISH (C is called) and  
> sends it to A.
> - A sees in his phone that C is begin called by B.
> - However, due to some network error (or C crashed) C doesn't reply to
> the INVITE (neither 100 or 1XX).
>
> In this case, why is useful the NOTIFY A has received?
> Or perhaps the "trying" and "preceeding" NOTIFY would only be received
> by A in case C is the caller?
>
>
>
> -- 
> Iñaki Baz Castillo
> <ibc at aliax.net>
>
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