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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 |