[Freeswitch-users] att_xfer+transfer, how?

[Kamil Nigmatullin]

It seems to me that you have a mess in your logic or maybe you will write
me in Russian to email  so i could understand better your problem?
16 окт. 2015 г. 21:30 пользователь "Денис" <denis at ringme.ru> написал:

> Hello.
>
> For right work our extensions we need make att_xfer not so stupid,
> because when we call leg C, in rules we can have IVR, queue, group
> calls, redirects to another extension, ext call etc. But att_xfer make
> only bridge. For us it does not work.
>
> In system - ALL calls makes via kamailio, and bridge goes to kamailio
> too (with error 500 in ivr/queue)
>
> First, i try to return 302 from kamailio with called contact when i see
> some variable in invite, but it's work not so good, and with bugs.
> Second, i use loopback. Works strange, but better than nothing. But in docs
> https://freeswitch.org/confluence/display/FREESWITCH/Attended+Transfer
> Observations
> att_xfer will not work with loopback channels because the application
> blocks when bridged to the C leg. If the C leg hangs up, it will bridge
> back to A. Since loopback hangs up to replace the legs to the correct
> legs, att_xfer will detect that and bridge it back to the A leg
> automatically.
>
> Old info in doc or really we will have problems?
>
> Or i need write right att_xfer on python/lua?
>
> Please, share your experience and maybe more worked code.
>
> Now:
>      <extension name="att_xfer">
>        <condition field="destination_number" expression="^att_xfer$">
>          <action application="read" data="2 15
> 'tone_stream://%(10000,0,350,440)' digits 5000 #"/>
>          <action application="set" data="origination_cancel_key=#"/>
>          <action application="set" data="sip_h_X-return=true"/>
>          <action application="log" data="err
> sip_from_port=${sip_from_port}, sip_to_port=${sip_to_port}, <action
> application="set"
>
> data="export_vars=sip_ph_X-Call-UUID,X-ResolveArray,Other-Leg-Unique-ID,sip_rh_X-Leg2i,Other-Leg-X-Leg2i,sip_h_X-Inring,sip_h_X-FromID,sip_received_port,sip_req_uri,sip_from_uri,sip_req_user,sip_req_host,sip_to_uri,sip_to_user,sip_to_host,sip_from_user,sip_from_host"/>
>          <action application="att_xfer" data="loopback/${digits}/XML"/>
>        </condition>
>      </extension>
>
>
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