-- Executing Dial("SIP/5656-45d7", "Zap/g1/8332") in new stack
    -- Requested transfer capability: 0x00 - SPEECH
    -- Called g1/8332
  == Primary D-Channel on span 1 down
Aug 19 20:35:19 WARNING[6665]: chan_zap.c:2131 pri_find_dchan: No D-channels available!  Using Primary on channel anyway 24!
    -- Hungup 'Zap/1-1'
  == No one is available to answer at this time (1:0/0/0)
  == Auto fallthrough, channel 'SIP/5656-45d7' status is 'NOANSWER'
  == Primary D-Channel on span 1 down
Aug 19 20:35:22 WARNING[6665]: chan_zap.c:2131 pri_find_dchan: No D-channels available!  Using Primary on channel anyway 24!