 |
| communication signal: 49 phrases in 14 subjects |
| Armored vehicles | 3 |
| Astronautics | 1 |
| Caspian | 1 |
| Communications | 3 |
| General | 1 |
| Information technology | 1 |
| Logistics | 1 |
| Mass media | 1 |
| Military | 23 |
| Nautical | 1 |
| Operation systems | 1 |
| Technology | 5 |
| Telecommunications | 6 |
| Telephony | 1 |