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The tables below show the frequencies that are transmitted when different characters are sent using the DTMF Generator.
Digit |
1 |
2 |
3 |
4 |
5 |
Low Frequency |
697Hz |
697Hz |
697Hz |
770Hz |
770Hz |
High Frequency |
1.21kHz |
1.34kHz |
1.48kHz |
1.21kHz |
1.34kHz |
Digit |
6 |
7 |
8 |
9 |
Low Frequency |
770Hz |
852Hz |
852Hz |
852Hz |
High Frequency |
1.48kHz |
1.21kHz |
1.34kHz |
1.48kHz |
Digit |
A |
B |
C |
D |
0 |
* |
# |
Low Frequency |
697Hz |
770Hz |
852Hz |
941Hz |
941Hz |
941Hz |
941Hz |
High Frequency |
1.633kHz |
1.633kHz |
1.633kHz |
1.633kHz |
1.34kHz |
1.21kHz |
1.48kHz |