The system permits a manual obfuscation of a call calls using a DTMF key sequence at the user's handset. When a user enters a specified sequence of digits, the obfuscation begins, and any audio will be immediately and irreversibly overwritten with the tone specified in the
| Referencemacro |
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| Label | /audio/obfuscation/tones/ |
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section of the
file. To stop obfuscation, the
sequence must be entered, whereupon the audio will be written normally to the call's stream.
...
Additionally, an obfuscation timeout can be specified to automatically stop the obfuscation after a specified period of time, to prevent the entire remaining call from being obfuscated in case the user forgets to manually stop the obfuscation. This timeout period can be specified (in milliseconds) using the
element.
...