[Freeswitch-users] 3-user conference from 2-user call

[Yehavi Bourvine]

If all you need is a 3-party call then why won't you do it via the phone's
confference option? As far as I know all IP phones support 3 way call, some
of them even support 4 and 5 way call.

                         __Yehavi:


2012/4/5 lorentz.nails <lorentz.nails at gmail.com>

> I would like to create a 3-user conference from a 2-user call (bridge)
> without calling the third user twice.
>
> The scenario is the following:
> 1. user 1000 calls user 1001 (that responds);
> 2. user 1001 may decide to create a 3-user conference by transferring the
> execution to an extension that use conference_set_auto_outcall to invite
> user 1002 and create the conference.
>
> <action application="bind_meta_app" data="3 b s execute_extension::cf XML
> features"/>
>
> <extension name="cf">
>     <condition field="destination_number" expression="^cf$">
>         <action application="answer"/>
>         <action application="transfer" data="-both 3000 XML default"/>
>     </condition>
> </extension>
>
> <extension name="nb_conferences">
>     <condition field="destination_number" expression="^(3000)$">
>         <action application="answer"/>
>         <action application="set"
> data="conference_auto_outcall_timeout=20"/>
>         <action application="set"
> data="conference_auto_outcall_flags=none"/>
>         <action application="set"
> data="conference_auto_outcall_caller_id_name=${effective_caller_id_name}"/>
>         <action application="set"
> data="conference_auto_outcall_caller_id_number=${effective_caller_id_number}"/>
>         <action application="set"
> data="conference_auto_outcall_profile=default"/>
>         <action application="conference_set_auto_outcall" data="user/1002@
> ${domain}"/>
>         <action application="conference" data="$1 at default"/>
>     </condition>
> </extension>
>
> At this point user 1002 receive two simultaneous calls: one from user 1000
> and one from user 1001 (I'm using softphones).
>
> The behavior I would like to achieve is that user 1002 only gets one call
> from user 1001 or from the conference.
>
>
> Lorentz
>
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