 |
| |||
| monitoring system | |||
| back signalling | |||
| supervision signaling (oleg.vigodsky); supervisory signaling (ssn); supervisory signalling (ssn) | |||
| контрольная сигнализация: 14 phrases in 8 subjects |
| Communications | 1 |
| Firefighting and fire-control systems | 1 |
| Mass media | 3 |
| Military | 2 |
| Sakhalin R | 1 |
| Security systems | 2 |
| Technology | 2 |
| Telecommunications | 2 |