 |
| |||
| telephone circuit | |||
| message circuit | |||
| voice circuit | |||
| |||
| toll grade telephone circuits | |||
| телефонная цепь: 43 phrases in 6 subjects |
| Communications | 3 |
| Information security and data protection | 1 |
| Makarov | 5 |
| Mass media | 27 |
| Security systems | 5 |
| Technology | 2 |
|
| |||
| telephone circuit | |||
| message circuit | |||
| voice circuit | |||
| |||
| toll grade telephone circuits | |||
| телефонная цепь: 43 phrases in 6 subjects |
| Communications | 3 |
| Information security and data protection | 1 |
| Makarov | 5 |
| Mass media | 27 |
| Security systems | 5 |
| Technology | 2 |