-- Moving call from channel 166 to channel 165
    -- Channel 0/21, span 7 got hangup
    -- Zap/166-1 is busy
    -- Hungup 'Zap/166-1'
  == Everyone is busy/congested at this time
    -- Executing Dial("Zap/10-1", "Zap/G5/1879") in new stack
Dec  2 09:45:40 WARNING[16183]: chan_zap.c:4453 zt_new: Channel 166 already has a Real call
    -- Called G5/1879
Dec  2 09:45:40 WARNING[16183]: chan_zap.c:7067 pri_fixup_principle: Call specified, but not found?
    -- Channel 0/22, span 7 got hangup
    -- Zap/166-1 is circuit-busy
    -- Hungup 'Zap/166-1'
  == Everyone is busy/congested at this time