== Using SIP RTP TOS bits 184
== Using SIP RTP CoS mark 5
-- Called SIP/96xxxx@cmphone
-- Got SIP response 503 "Server Too Busy" back from 202.0.179.3:5060
-- SIP/cmphone-00000023 is circuit-busy
== Everyone is busy/congested at this time (1:0/1/0)
-- Auto fallthrough, channel 'SIP/1913-00000022' status is 'CONGESTION'