hercules*CLI> set verbose 10
Verbosity is at least 10
    -- Executing Dial("SIP/1002-b0c3", "SIP/12142543646@sip.broadvoice.com|30") in new stack
    -- Called 12142543646@sip.broadvoice.com
    -- Got SIP response 400 "Invalid From" back from 147.135.0.128
    -- SIP/sip.broadvoice.com-ba53 is circuit-busy
  == Everyone is busy/congested at this time (1:0/1/0)
    -- Executing Busy("SIP/1002-b0c3", "") in new stack
  == Spawn extension (default, 12142543646, 102) exited non-zero on 'SIP/1002-b0c3'
hercules*CLI>