[ACD]
        include => programming
        exten => s,1,Set(CHANLIST=SIP/100&SIP/105&SIP/103&SIP/125)              ;sets availchan to a list of operators
        exten => s,2,NoOp(${CHANLIST})                  ;
        exten => s,3,While($["${CHANLIST}" != ""])      ;loops the variable until it is null
        exten => s,4,NoOp(${CHANLIST})                  ;prints the variable
        exten => s,5,Set(TESTCHAN=${CHANLIST:0:7})      ;stores a chunk of the variable to $TESTCHAN for testing
        exten => s,6,ChanIsAvail(${TESTCHAN}|s)         ;checks $TESTCHAN for availability
        exten => s,7,NoOp(${AVAILCHAN})                 ;prints $TESTCHAN's Availability
        exten => s,8,Set(PAGE=${PAGE}&${AVAILCHAN:0:7}) ;Adds the extension to $PAGE, nulls are basically ignored
        exten => s,9,Set(CHANLIST=${CHANLIST:8})        ;removes the increment from $CHANLIST BUMP!
        exten => s,10,EndWhile()                        ;end the loop
        exten => s,107,Set(CHANLIST=${CHANLIST:8})      ;jumps don't write to PAGE
        exten => s,108,EndWhile()                       ;end the loop
        exten => s,11,Goto(dialplan,s,1)             ;moving on in either case
        exten => s,109,Goto(dialplan,s,1)            ;moving on in either case

[dialplan]
        exten => s,1,GotoIf($["${PAGE}" = ""]?nooper,s,1)
        exten => s,2,Goto(oper,s,1)
        exten => s,3,NoOp(DANGER WILL ROBINSON!)
        exten => s,4,Queue(operator|nt|||30)

[nooper]
        exten => s,1,Background(/root/prompts/astrec-5401)
        exten => s,2,Queue(operator|t|||30)
        exten => t,1,Queue(operator|t|||30)
        exten => i,1,Queue(operator|t|||30)
[oper]
        exten => s,1,Queue(operator|rt|||30)
        exten => t,1,Queue(operator|rt|||30)
        exten => i,1,Queue(operator|rt|||30)

[park-dial]
        exten => t,1,Queue(operator|rt|||30)
        exten => i,1,Queue(operator|rt|||30)