 |
| telephone -communications system: 15 phrases in 7 subjects |
| Automated equipment | 1 |
| Military | 1 |
| Sakhalin | 1 |
| Security systems | 1 |
| Technology | 2 |
| Telecommunications | 7 |
| Telephony | 2 |
|
| telephone -communications system: 15 phrases in 7 subjects |
| Automated equipment | 1 |
| Military | 1 |
| Sakhalin | 1 |
| Security systems | 1 |
| Technology | 2 |
| Telecommunications | 7 |
| Telephony | 2 |