4 ms·
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 yo
by DanielBMarkham 15y ago
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....
- kstenerud 15y agoOr you could whistle a 2600Hz tone.
- lucasjung 15y agoI 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.
- chronomex 15y agoThe tones used in DTMF were chosen to minimize accidental talk-off. They're relatively widely separated, with no harmonic relationship between any given pair.