 |
| |||
| analogue voice encryption | |||
| speech scrambling; voice scrambling | |||
| скремблирование речи: 13 phrases in 3 subjects |
| Information security and data protection | 5 |
| Mass media | 1 |
| Security systems | 7 |
|
| |||
| analogue voice encryption | |||
| speech scrambling; voice scrambling | |||
| скремблирование речи: 13 phrases in 3 subjects |
| Information security and data protection | 5 |
| Mass media | 1 |
| Security systems | 7 |