 |
| |||
| signaling current (телефония) | |||
| signalling current | |||
| ringing current (в телефонии) | |||
| ringing current | |||
| ring current (oleg.vigodsky); calling current (ssn) | |||
| вызывной ток: 28 phrases in 8 subjects |
| Communications | 2 |
| Electronics | 2 |
| Makarov | 1 |
| Mass media | 8 |
| Rail transport | 1 |
| Technology | 5 |
| Telecommunications | 5 |
| Telephony | 4 |