How to use it
- Lift the handset — you'll hear the dial tone (the real 350 + 440 Hz hum).
- Drop a coin for the satisfying clunk, then dial any number — each key plays its true Touch-Tone beep.
- Press Call to hear it ring… it might connect, or land on a busy signal. Hang up to reset.
You can also dial straight from your keyboard — the number keys, * and # trigger the tones, Enter calls, and Esc hangs up.
The sounds are real
Every sound here is generated on the fly, not played from a file. The keypad uses genuine DTMF (Dual-Tone Multi-Frequency) signalling — the "Touch-Tone" system where each key is two pure tones stacked together. The dial tone, ringback (440 + 480 Hz) and busy signal (480 + 620 Hz) use their authentic frequencies and cadences. That precise, slightly hollow quality is what makes it so satisfying.
Frequently asked questions
Are these real phone sounds?
Yes — genuine DTMF keypad tones, the 350+440 Hz dial tone, and true ringback and busy signals, all synthesized live with the Web Audio API.
Why isn't there any sound?
Browsers only start audio after you interact. Lift the handset or press a key, and make sure your device isn't muted.
Does it actually call anyone?
No. It's a toy — nothing is dialed or transmitted. The ringback occasionally lands on a busy signal just for fun.
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