-- Accepting call from '64009633' to '68299931' on channel 0/27, span 1
    -- Executing Dial("Zap/27-1", "IAX2/0556564009633")
    -- Called 0556564009633
    -- Call accepted by 218.186.182.136 (format g729)
    -- Format for call is g729
    -- IAX2/0556564009633-1 is ringing
    -- IAX2/0556564009633-1 is circuit-busy
Dec 17 20:52:40 WARNING[16112]: chan_iax2.c:7097 socket_read: Call rejected by 218.186.182.136: Call rejected manually.
Dec 17 20:52:40 NOTICE[16112]: chan_iax2.c:1628 iax2_destroy: Avoiding IAX destroy deadlock
    -- Hungup 'IAX2/0556564009633-1'
  == Everyone is busy/congested at this time (1:0/1/0)
    -- Executing Hangup("Zap/27-1", "")
  == Spawn extension (starhubtrunks, 68299931, 2) exited non-zero on 'Zap/27-1'
    -- Hungup 'Zap/27-1'