[myconference]
exten => 602,1,Answer()
        same => n,Set(fileexist=${STAT(e,/var/spool/asterisk/outgoing/conference.call)})
        same => n,Set(filesize=${STAT(s,/var/spool/asterisk/outgoing/conference.call)})
        same => n,Set(filesize=$[${filesize} + 1])
        same => n,GotoIf($[${filesize} > 1]?join:test)
        same => n(test),Playback(to_cancel_your_subscription_en)
        same => n,Hangup()

        same => n(join),NoOp()
        same => n,Answer()
        same => n,ConfBridge(1234,,602_users,602_menu)
        same => n,Hangup()





[soundtest]
exten => 100,1,Answer()
       same => n,MP3Player(http://192.168.10.190/Just_a_test.mp3)
exten => 1,1,Goto(myconference,602,1)