| |||
| dual-tone multi-frequency | |||
| |||
| DTMF-system | |||
| |||
| dobbelttone multifrekvens | |||
|
dual-tone multi-frequency : 3 phrases in 2 subjects |
| Communications | 2 |
| Information technology | 1 |
| |||
| dual-tone multi-frequency | |||
| |||
| DTMF-system | |||
| |||
| dobbelttone multifrekvens | |||
|
dual-tone multi-frequency : 3 phrases in 2 subjects |
| Communications | 2 |
| Information technology | 1 |