[o]

[..]
  1. on_answer
  2. on_anything
  3. on_dchan_down
  4. on_dchan_up
  5. on_hangup
  6. on_info
  7. on_io_fail
  8. on_proceed
  9. on_restart
  10. on_ring
  11. on_ringing
  12. openPcapFile
[..]