Таблица соответствия принимаемого DTMF сигнала и формируемого кода
| 941 | 1633 | 0 | 0 | 0 | 0 |
| 697 | 1209 | 0 | 0 | 0 | 1 |
| 697 | 1336 | 0 | 0 | 1 | 0 |
| 697 | 1477 | 0 | 0 | 1 | 1 |
| 700 | 1209 | 0 | 1 | 0 | 0 |
| 700 | 1336 | 0 | 1 | 0 | 1 |
| 700 | 1477 | 0 | 1 | 1 | 0 |
| 852 | 1209 | 0 | 1 | 1 | 1 |
| 852 | 1336 | 1 | 0 | 0 | 0 |
| 852 | 1477 | 1 | 0 | 0 | 1 |
| 941 | 1209 | 1 | 0 | 1 | 0 |
| 941 | 1336 | 1 | 0 | 1 | 1 |
| 941 | 1477 | 1 | 1 | 0 | 0 |
| 697 | 1633 | 1 | 1 | 0 | 1 |
| 770 | 1633 | 1 | 1 | 1 | 0 |
| 852 | 1633 | 1 | 1 | 1 | 1 |
