On 18 aug 2010, at 15.58, Michael Picher wrote:

> This would be an awesome feature request.

So, how do we do this? What would be the interest of such a feature in the 
community?

> I've seen other emergency response products that can do this.

> Have emergency conferences pre-setup so that a team member (must be in the 
> list as allowed) can dial in to the conference to initiate it.  The bridge 
> then dials out to all parties, announces the emergency call, prompts the user 
> for 1 to accept and join the conference or 2 to reject the call.

I think this can be done in at least two different ways:

1. Centralized model: Let Freeswtich/Conference server do everything. One 
inbound call to a defined SIP URI/extension should trigger 
Freeswitch to dial-out to a preconfigured list of users. Either connect them 
directly (for instance, phones with auto-answer) 
or, as you mentioned, first let the users accept the call. 

2. Distributed model:  Initiate the call from an application/UA  that dials the 
preconfigured list of users and uses SIP REFER to transfer/connect them into a 
simple MeetMe conference. The application must then subscribe to the Dialog 
state of the participating users to be able to terminate the different sessions 
to the conference server in order to tear down the emergency conference once 
done. I guess this approach could work as well? Comments highly appretiated...

/Staffan

--
Staffan Kerker
mail/sip/xmpp: [email protected]

"There is absolutely no money above the 5th fret..." /Donald "Duck" Dunn

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