<p>TIM Enterprise offers the ability to obfuscate (mask out) one or more sections of the audio of a telephone call with an audible tone, 
preventing the listener from hearing the original speech.</p>

<p>This is normally required for compliance in certain industries where regulations dictate that certain spoken information be masked out, e.g. 
the <a href="https://www.pcisecuritystandards.org/security_standards/index.php">Payment Card Industry - Data Security Standard (PCI-DSS)</a>.</p>

<p>Throughout this guide, we'll adopt the <b>PCI-DSS</b> example above, where telephone calls that contain spoken credit card information need to be 
masked out by an audible tone, but only during those parts of the call when the card details are being spoken, leaving intact the rest of the call audio.</p>

<p>In this scenario, we'll assume that agents (employees that make or receive telephone calls) utilise an in-house or third-party data entry system into which credit card detailed are entered using a computer.</p>