I was just refilling a prescription on the automated line and the thought just dawned on me. How do they know what buttons I’m pressing? Sorry if this is really dumb. I understand next to nothing about technology. Thanks
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Each button press initiates a tone which is sent and recognized by the receiving party.
It’s actually a combination of 2 tones in harmony. 2 sets of 4 tones. Meaning there are a total of 16 different combinations. You have access to 12 (0 1 2 3 4 5 6 7 8 9 # *) and there are 4 ‘hidden’ ones (A B C D) that the phone company can use for special system access, diagnostics, and whatnot.
For more information, the system is called Touch Tone
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