pbx1*CLI> core set verbose 10
Set remote console verbosity to 10
pbx1*CLI> core set debug 10
Core debug was 5 and is now 10
  == Using SIP VIDEO CoS mark 6
  == Using SIP RTP CoS mark 5
    -- Executing [211@extensions:1] Goto("SIP/143-00000072", "intercom,211,1") in new stack
    -- Goto (intercom,211,1)
    -- Executing [211@intercom:1] SIPAddHeader("SIP/143-00000072", "Alert-Info: Ring Answer") in new stack
    -- Executing [211@intercom:2] Page("SIP/143-00000072", "SIP/211,diqA(local/intercom)") in new stack
  == Using SIP RTP CoS mark 5
    -- Called 211
    -- SIP/211-00000073 is ringing
    -- SIP/211-00000073 answered
    -- <SIP/211-00000073> Playing 'local/intercom.slin' (language 'en')
[Jan 27 22:04:49] ERROR[28956][C-00000023]: confbridge/conf_state.c:47 conf_invalid_event_fn: Invalid event for confbridge user ''
  == Spawn extension (intercom, 211, 2) exited non-zero on 'SIP/143-00000072'
    -- Executing [h@intercom:1] Hangup("SIP/143-00000072", "") in new stack
  == Spawn extension (intercom, h, 1) exited non-zero on 'SIP/143-00000072'