-- Executing Macro("SIP/jonoffice-08230d00", "elephantqueueexten|3149|elephant-3149") in new stack
    -- Executing Answer("SIP/jonoffice-08230d00", "") in new stack
    -- Executing Set("SIP/jonoffice-08230d00", "SPYGROUP=2000") in new stack
    -- Executing Queue("SIP/jonoffice-08230d00", "elephant-3149|nr|||20") in new stack
    -- Called SIP/chrisoffice
    -- Got SIP response 486 "Busy Here" back from XXX.XXX.XXX.XXX
    -- SIP/chrisoffice-0829c1d0 is busy
    -- Exiting on time-out cycle
    -- Executing Goto("SIP/jonoffice-08230d00", "s-TIMEOUT|1") in new stack
    -- Goto (macro-elephantqueueexten,s-TIMEOUT,1)


extensions.conf
[macro-elephantqueueexten]
;   ${ARG1} - Extension  (we could have used ${MACRO_EXTEN} here as well
;   ${ARG2} - Queue to join
;

exten => s,1,Answer()
exten => s,n,Set(SPYGROUP=2000)       ; Listen to incoming calls
exten => s,n,Queue(${ARG2}|nr|||20)     ; Ring the interface, 20 seconds maximum

exten => s,n,Goto(s-${QUEUESTATUS},1)   ; Jump based on status (TIMEOUT,FULL,JOINEMPTY,LEAVEEMPTY,JOINUNAVAIL,LEAVEUNAVAIL)

exten => s-TIMEOUT,1,Voicemail(u${ARG1})  ; If unavailable, send to voicemail w/ unavail announce

exten => s-JOINUNAVAIL,1,Voicemail(b${ARG1})    ; If busy, send to voicemail w/ busy announce
exten => s-LEAVEUNAVAIL,1,Voicemail(b${ARG1})   ; If busy, send to voicemail w/ busy announce

exten => _s-.,1,Goto(s-TIMEOUT,1)   ; Treat anything else as timeout

exten => a,1,VoicemailMain(${ARG1})   ; If they press *, send the user into VoicemailMain