 |
| |||
| dual-tone multifrequency | |||
| dual tone multi frequency (DTMF) | |||
| dual-tone multi-frequency (oleg.vigodsky) | |||
| двухтональный многочастотный: 17 phrases in 9 subjects |
| Caspian | 2 |
| Communications | 1 |
| Electronics | 6 |
| General | 1 |
| Information technology | 1 |
| Mass media | 1 |
| Oil / petroleum | 1 |
| Security systems | 1 |
| Technology | 3 |