pbx1*CLI> 
    -- Attempting call on SIP/143 for s@macro-cftest:1 (Retry 1)
  == Using UDPTL CoS mark 5
  == Using SIP RTP CoS mark 5
    -- Executing [failed@macro-cftest:1] NoOp("OutgoingSpoolFailed", "Channel is OutgoingSpoolFailed") in new stack
    -- Auto fallthrough, channel 'OutgoingSpoolFailed' status is 'UNKNOWN'
[Dec  7 15:12:21] NOTICE[18842]: pbx_spool.c:349 attempt_thread: Call failed to go through, reason (3) Remote end Ringing
[Dec  7 15:12:21] NOTICE[18842]: pbx_spool.c:352 attempt_thread: Queued call to SIP/143 expired without completion after 0 attempts
pbx1*CLI>