DTMF obfuscation

The system permits manual obfuscation of 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
Label /audio/obfuscation/tones/

section of the

Keywordmacro
Label settings.xml

file. To stop obfuscation, the 

Referencemacro
Label stop

key sequence must be entered, whereupon the audio will be written normally to the call's stream.

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