DTMF - Nokia Lumia Icon

If you're calling into an automated dial-in system (e.g., voicemail) and your dialpad entries aren't being recognized, view this info.

Nota Dual-tone multi-frequency (DTMF) tones are used by automated dial-in systems such as voicemail or where prompts are used to navigate.

  • are used by automated dial-in systems such as voicemail or where prompts are used to navigate.
  • are automatically configured for Windows 10. No adjustment capabilities are available.
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