Tone list from White Box
Usage: dtmf> /dev/dsp Produces 8000 Hz/8 bit audio sample of required DTMF tones. Tone characters: 0123456789ABCD*# Meta characters and commands: , - pause for one digit dial time [D= ] - set duration of tone to [P= ] - set pause between tones to [D=D] - set duration of tone to default (800 samples) [P=D] - set pause between tones to default (400 samples) [P, ] - pause for [ ] - beep tone [ , ] - beep tone for [ ] - beep tone of Hz [ , ] - beep tone of Hz for [ : , ] - beep dual tone of : Hz for can be a number of samples (eg. 8000), number of seconds (eg. 2s), or number of milliseconds (eg. 200ms). Example: dtmf 123,45[P,2s][2600,1250ms]5551234 - dial 123, pause, dial 45, pause two seconds, output 1.25 seconds of 2600 Hz tone, dial 555-1234 dtmf [SERVO,10s]234[P,1s][TASI,1s][P,1s][MF1][MF3][MF4][MF2] - send SERVICE_OBSERVING for 10 seconds, dial 234 in DTMF, wait for one sec, send TASI tone for one sec, wait for one sec, dial 1342 in MF dtmf tones - displays the list of named tones and their frequencies