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DanielBMarkham
on Nov 11, 2011
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"I would dial the 300 baud dial-up number, and scr...
I think I read somewhere that the system was designed specifically for this kind of attack. It uses two tones of widely different frequencies.
Of course, if you had a friend....
chronomex
on Nov 12, 2011
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The tones used in DTMF were chosen to minimize
accidental
talk-off. They're relatively widely separated, with no harmonic relationship between any given pair.
lucasjung
on Nov 11, 2011
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I don't know about carrier tone, but each key on a touch-tone phone has two freqs: one for the row, one for the column.
kstenerud
on Nov 11, 2011
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Or you could whistle a 2600Hz tone.
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Of course, if you had a friend....