 |
| |||
| idle indication signal | |||
| free-line signal; idle identification signal (в телефонии) | |||
| free-line sign; idle indication sign | |||
| сигнал свободной линии: 9 phrases in 4 subjects |
| Makarov | 1 |
| Mass media | 3 |
| Telecommunications | 2 |
| Telephony | 3 |
|
| |||
| idle indication signal | |||
| free-line signal; idle identification signal (в телефонии) | |||
| free-line sign; idle indication sign | |||
| сигнал свободной линии: 9 phrases in 4 subjects |
| Makarov | 1 |
| Mass media | 3 |
| Telecommunications | 2 |
| Telephony | 3 |