[SR-Users] Late parallel forking

[Guillaume Bour]

Thanks Daniel,

I tried your solution, and it works great!
Not sure it completely fill our needs though, so we'll probably write our
own module (and push it to the community of course :)

Regards,
Guillaume


On Mon, Jul 21, 2014 at 02:59:08PM +0200, Daniel-Constantin Mierla wrote:
> Hello,
> 
> you may get similar results using t_cancel_callid(():
> - http://kamailio.org/docs/modules/stable/modules/tmx.html#idm8272
> 
> For each call you have to store the call-id, cseq and the target
> user somehow (e.g., using htable).
> 
> Then, when you have a registration, see if the user has an ongoing
> call towards him/her. If yes, cancel that transaction and you end up
> in failure route. Based the flags, you can see it was canceled on
> purpose and can do another lookup location to get now two branches.
> 
> You would need to store the initial caller address before looking up
> location, revert to it in failure route before looking up location
> again.
> 
> The behavior is not exactly the same as you requested, as first
> branch is canceled. But given that the branch will be called again
> in short time, the user might not notice anything in terms of
> ringing interruption.
> 
> Alternative is of course writing a function for it, at the end it is
> on of the big benefits of open source.
> 
> Cheers,
> Daniel
> 
> On 21/07/14 13:06, Guillaume Bour wrote:
> >Hi,
> >I would like to do some kind of "late parallel forking" (see the example below).
> >Is there a way to do such thing with Kamailio ?
> >Here is an example:
> >         . A call B
> >         . B device 1 is connected so INVITE is forwarded to it
> >         . B device 2 registers succesfully
> >         . as device 1 as not yet answered and INVITE transaction is not expired, I want INVITE message
> >           to be forwarded to device 2 (so both are ringing)
> >Regards,
> >Guillaume Bour
> >
> >_______________________________________________
> >SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
> >sr-users at lists.sip-router.org
> >http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
> 
> -- 
> Daniel-Constantin Mierla - http://www.asipto.com
> http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
> 
> 
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