[OpenSIPS-Users] Parking a Call using b2b modules

[Jayesh Nambiar]

Hi Bogdan,
Thanks for the reply. But the challenge with me is that I don't want to use
an additional component like a Media Server in this setup. The idea is to
get away with too many components which can act like point of failures.
Hence I was exploring the idea of parking the call in Opensips itself and
do the routing within Opensips without the need of an external media server.
Any possibility of this being done within opensips?? And the only option
that I can see for this is the b2b modules.

--- Jayesh


On Tue, Jun 17, 2014 at 8:44 PM, Bogdan-Andrei Iancu <bogdan at opensips.org>
wrote:

>  Hi Jayesh,
>
> For such scenario you do not need b2b at all. You can do it at signaling
> level. How ?
> - determine that the incoming call needs to be parked
> - send the call to a media server to play some ringing via 183 early media
> (call still not accepted); also push DB record to with the callid + user
> the call belongs to;
> - if target user registers -> check in DB for parked calls -> if yes, run
> a script to trigger the cancelling of that branch to media server (see
> t_uac_cancel MI command
> http://www.opensips.org/html/docs/modules/1.11.x/tm.html#id295912)
> - original call will go into failure route (because of the canceling) ->
> from there you can create a new branch to the newly registered user.
>
> I haven't tried, but it should work :)
>
> Regards,
>
> Bogdan-Andrei Iancu
> OpenSIPS Founder and Developerhttp://www.opensips-solutions.com
>
> On 17.06.2014 12:57, Jayesh Nambiar wrote:
>
> Hello All,
> I was trying to explore an option of parking a call on opensips using b2b
> modules with a trying or ringing response. More precisely, I was trying to
> do something like this:
> http://lists.opensips.org/pipermail/users/2010-October/014849.html
>
>  As soon as the call comes in, use b2b_logic to park the call. If the
> called user is registered, route the call; else keep the caller parked for
> 45 seconds, and within this duration if the called user registers, raise a
> E_REGISTERED event.
> Identify if there is a call parked for the user that just registered and
> if yes route the call or else respond with 408 timeout to the caller.
> I thought, it should be possible using the b2b modules and the event
> interface that opensips got. Am I thinking in the right direction from
> possibility perspective?? Can someone help me understand if this logic can
> be implemented within the script??
>
>  Thanks in advance,
>
>  --- Jayesh
>
>
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>
>
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