Mine

exten => _00!,1,Answer()
exten => _00!,n,Playback(silence/100ms)
exten => _00!,n,Playback(telephone-number)
exten => _00!,n,Playback(removed)
exten => _00!,n,GotoIf($["${EXTEN}" = "00"]?allqueues:thisqueue)

exten => _00!,n(thisqueue),NoOp(Removing all devices from this queue)
exten => _00!,n,Set(COUNT=1)
exten => _00!,n(thisqueueloop),Set(members=${DB(/Queue/PersistentMembers/elephant-3149)})
exten => _00!,n,Set(member=${CUT(members,\\\\|,${COUNT})})
exten => _00!,n,Set(COUNT=${COUNT}+1)
;exten => _00!,n,GotoIf($["${member}" != ""]?thisqueueloop)

;exten => _00!,n,RemoveQueueMember(elephant-${EXTEN:2})
exten => _00!,n,Hangup()

exten => _00!,n(allqueues),NoOp(Removing this device from all queues)
exten => _00!,n,Hangup()