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Monitor a channel.


Used to start monitoring a channel. The channel's input and output voice packets are logged to files until the channel hangs up or monitoring is stopped by the StopMonitor application.

By default, files are stored to /var/spool/asterisk/monitor/. Returns -1 if monitor files can't be opened or if the channel is already monitored, otherwise 0.


  • file_format
    • file_format - optional, if not set, defaults to wav
    • urlbase
  • fname_base - if set, changes the filename used to the one specified.
  • options
    • m - when the recording ends mix the two leg files into one and delete the two leg files. If the variable MONITOR_EXEC is set, the application referenced in it will be executed instead of soxmix/sox and the raw leg files will NOT be deleted automatically. soxmix/sox or MONITOR_EXEC is handed 3 arguments, the two leg files and a target mixed file name which is the same as the leg file names only without the in/out designator.
      If MONITOR_EXEC_ARGS is set, the contents will be passed on as additional arguments to MONITOR_EXEC. Both MONITOR_EXEC and the Mix flag can be set from the administrator interface.
    • b - Don't begin recording unless a call is bridged to another channel.
    • i - Skip recording of input stream (disables m option).
    • o - Skip recording of output stream (disables m option).

See Also

Import Version

This documentation was imported from Asterisk Version SVN-branch-1.8-r418641

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