Auto Callback to the ANI when ANI answers by the user, we Dial another Call and Bridge them
[Main]
exten => 111,1,Goto(cb,1,1)
exten => 222,1,Dial(SIP/666666)
[cb]
exten => 1,1,NoOp(Incoming call from # ${CALLERID(num)})
exten => 1,n,Goto(callback,333,1)
[callback]
;prepare for callback
exten => 333,1,NoOp(Hangup then callback to cellphone)
exten => 333,2,Hangup
exten => h,1,NoOp(copy callback.call file to /var/spool/asterisk/outgoing)
exten => h,n,System(echo -e "Channel: SIP/${CALLERID(num)}\\nContext: Main\\nExtension: 222" > /tmp/${UNIQUEID}.call)
exten => h,n,System(/bin/sleep 10s)
exten => h,n,System(mv /tmp/${UNIQUEID}.call /var/spool/asterisk/outgoing/)
