 |
| |||
| alarm line (Alexander Demidov) | |||
| signaling link | |||
| линия сигнализации: 45 phrases in 11 subjects |
| Communications | 2 |
| Computers | 1 |
| Electronics | 1 |
| General | 1 |
| Information security and data protection | 2 |
| Mass media | 12 |
| Military | 1 |
| Rail transport | 1 |
| Security systems | 5 |
| Telecommunications | 18 |
| Telephony | 1 |