 |
| |||
| digital voice communications system | |||
| digital exchange system | |||
| система цифровой телефонной связи: 7 phrases in 4 subjects |
| Mass media | 2 |
| Military | 1 |
| Telecommunications | 3 |
| Telephony | 1 |
|
| |||
| digital voice communications system | |||
| digital exchange system | |||
| система цифровой телефонной связи: 7 phrases in 4 subjects |
| Mass media | 2 |
| Military | 1 |
| Telecommunications | 3 |
| Telephony | 1 |