exten => _NXXXXXX,1,Agi(membercall.agi)
; Returns:
; DIALUSER == 0 if no user exists
; Returns Proper Dial STring if does exist
; ValidVM (voicemail identifier) == 0 if no vm box exists
; otherwise it returns the mailbox id

exten => _NXXXXXX,2,GotoIf($["${DIALUSER}" = "0"]?50:3)
exten => _NXXXXXX,3,Dial(${DIALUSER},30)
exten => _NXXXXXX,4,GotoIf($["${VALIDVM}" = "0"]?50:5)
exten => _NXXXXXX,5,Voicemail(u${VALIDVM})
exten => _NXXXXXX,6,Hangup()
exten => _NXXXXXX,50,Playback(ss-noservice)
exten => _NXXXXXX,51,Congestion()