What is DTMF (Dual-Tone Multi-Frequency)?
DTMF (Dual-Tone Multi-Frequency) is the tone signalling produced when you press phone keypad digits, used for menus and for entering card numbers by phone.
How does DTMF (Dual-Tone Multi-Frequency) relate to Silux Call?
Silux Call’s PCI module masks DTMF during card entry so digits never enter recordings — dropping you from PCI SAQ-D to SAQ-A scope.
Also searched as: touch tones, keypad tones, dtmf redaction.
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