Monitor — Monitors a channel
Channel
            [required] Specifes the channel to be recorded.
File
            [optional] The name of the file in which to record the channel. The path defaults to the Asterisk monitor spool directory, which is usually /var/spool/asterisk/monitor. If no filename is specified, the filename will be the name of the channel, with slashes replaced with dashes.
Format
            [optional] The audio format in which to
            record the channel. Defaults to wav.
Mix
            [optional] A Boolean flag specifying whether or not Asterisk should mix the inbound and outbound audio from the channel in to a single file.
ActionID
            [optional] An identifier that can be used to identify the response to this action.