exten => s,n,Dial(IAX2/user@nufone-3/${ARG1},,g)
exten => s,n,Goto(dial-${DIALSTATUS},1)

exten => dial-CANCEL,1,Hangup
exten => dial-ANSWER,1,Hangup
exten => dial-NOANSWER,1,Hangup
exten => dial-BUSY,1,NoOp(Line is busy)
exten => dial-BUSY,2,Busy
exten => dial-CONGESTION,1,Macro(pri-dial,${ARG1},${ARG2})
exten => dial-CHANUNAVAIL,1,Macro(pri-dial,${ARG1},${ARG2})