exten => 123,1,GotoIf($["${DIALSTATUS}" = "BUSY"]?busy:available)
exten => 123,n(available),Playback(hello-world)
exten => 123,n,Hangup()
exten => 123,n(busy),Playback(busy)
exten => 123,n,Hangup()
改为:
exten => 123,1,NoOp(DIALSTATUS is ${DIALSTATUS})
exten => 123,n(if),ExecIf($["${DIALSTATUS}" = "BUSY"]?Playback(busy))
exten => 123,n(else),ExecIf($["${DIALSTATUS}" != "BUSY"]?Playback(hello-world))
exten => 123,n,Hangup()