 |
| |||
| communication between users; subscriber communication | |||
| fully restricted stations | |||
| связь между абонентами: 23 phrases in 7 subjects |
| Computers | 1 |
| Information security and data protection | 1 |
| Mass media | 11 |
| Military | 2 |
| Security systems | 1 |
| Technology | 3 |
| Telecommunications | 4 |