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| защита связи | |||
| защита средств связи (от несанкционированного доступа) | |||
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| защита линий связи | |||
| communication protection: 9 phrases in 6 subjects |
| General | 1 |
| Information security and data protection | 1 |
| Intelligence and security services | 1 |
| Military | 1 |
| Security systems | 3 |
| Telecommunications | 2 |