Asterisk 1.2.14
exten => _0.,1,NoOp(Adding to queue elephant-${EXTEN:1} member ${CUT(CHANNEL,-,-1)})
exten => _0.,n,AddQueueMember(elephant-${EXTEN:1},${CUT(CHANNEL,-,-1)},,j)
exten => _0.,n+101,NoOp(Removing from queue elephant-${EXTEN:1} member ${CUT(CHANNEL,-,-1)})
exten => _0.,n,RemoveQueueMember(elephant-${EXTEN:1},${CUT(CHANNEL,-,-1)})
-- Executing NoOp("SIP/foooffice-08230e10", "Adding to queue foo-3149 member SIP/foooffice") in new stack
-- Executing AddQueueMember("SIP/foooffice-08230e10", "foo-3149|SIP/foooffice||j") in new stack
May 31 16:43:46 WARNING[30300]: app_queue.c:2987 aqm_exec: Unable to add interface 'SIP/foooffice' to queue 'elephant-3149': Already there
== Auto fallthrough, channel 'SIP/foooffice-08230e10' status is 'UNKNOWN'