DtmfTone enum
Un tono Dtmf.
Campos
| A | A |
| Asterisk | Asterisk |
| B | B |
| C | C |
| D | D |
| Eight | Ocho |
| Five | Cinco |
| Four | Cuatro |
| Nine | Nueve |
| One | Uno |
| Pound | Pound |
| Seven | Siete |
| Six | Seis |
| Three | tres |
| Two | Dos |
| Zero | Cero |