It is possible to prevent the output of sensitive information such as DMTF values in log and trace files. This is done by using the secure_logging configuration option described in Security Configuration Options.
A VXML property exists to allow the audio URI redaction to be controlled within a document. If this property is set to true, all audio playback within the scope of the property will redact the URI from the logs.
Example:
<property name="audiouriredacted" value="true"/>