 |
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| physical line | |||
| bare line | |||
| metallic circuit | |||
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| physical ISDN telephone line (oleg.vigodsky) | |||
| физическая ISDN-линия: 25 phrases in 9 subjects |
| Communications | 2 |
| Computer networks | 1 |
| Information security and data protection | 3 |
| Internet | 1 |
| Mass media | 11 |
| Metallurgy | 1 |
| Power system protection | 1 |
| Security systems | 1 |
| Telecommunications | 4 |