-- Accepting call from '4505556089' to '7111' on channel 0/11, span 1
    -- Executing SetCDRUserField("Zap/11-1", "machine=gate1") in new stack
    -- Executing Dial("Zap/11-1", "Zap/g3/7111") in new stack
Dec 10 13:23:00 WARNING[31835]: chan_zap.c:4469 zt_new: Channel 49 already has a Real call
Dec 10 13:23:00 NOTICE[31835]: app_dial.c:803 dial_exec: Unable to create channel of type 'Zap' (cause 0)
  == Everyone is busy/congested at this time
    -- Executing Dial("Zap/11-1", "Zap/g3/7111") in new stack
Dec 10 13:23:00 WARNING[31835]: chan_zap.c:4469 zt_new: Channel 49 already has a Real call
Dec 10 13:23:00 NOTICE[31835]: app_dial.c:803 dial_exec: Unable to create channel of type 'Zap' (cause 0)
  == Everyone is busy/congested at this time