== Using SIP RTP CoS mark 5
    -- Executing [5010@default:1] Dial("SIP/5020-00000029", "SIP/5010") in new stack
  == Using SIP RTP CoS mark 5
    -- Called 5010
    -- SIP/5010-0000002a is ringing
    -- Got SIP response 603 "Decline" back from 10.1.1.100:5060
    -- SIP/5010-0000002a is busy
  == Everyone is busy/congested at this time (1:1/0/0)
    -- Executing [5010@default:2] Playback("SIP/5020-00000029", "hello-world") in new stack
    -- <SIP/5020-00000029> Playing 'hello-world.gsm' (language 'en')
    -- Auto fallthrough, channel 'SIP/5020-00000029' status is 'BUSY'