[macro-pageext]
exten => s,1,ChanIsAvail(${ARG1}|js);j is for dump s is for any call
exten => s,2,SIPAddHeader(Call-Info: answer-after=0)
exten => s,3,Dial(${ARG1})
exten => s,4,NoOp();Add others here
exten => s,5,Hangup
exten => s,102,Hangup