[from-sip]
exten => _X.,n(instruct),BackGround(demo-instruct)
exten => _X.,n,WaitExten
exten => 2,1,Dial(SIP/ata,25,Ttr)
exten => 2,n,Goto(s,instruct)
exten => 3,1,Set(LANGUAGE()=fr)
exten => 3,n,Goto(s,instruct)