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call waiting function | |||
call sign; identification; offering signal; call signal; calling signal; call letters; alerting signal | |||
call waiting (A service that notifies a user that a call is coming in while the user is in a call) | |||
ringing tone; ringback tone | |||
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call-arrival signal |
signal d'appel: 53 phrases in 10 subjects |
Coal | 1 |
Communications | 14 |
Computers | 1 |
Electronics | 17 |
Information technology | 2 |
Mechanic engineering | 6 |
Rail transport | 1 |
Telecommunications | 7 |
Transport | 3 |
Радиоактивное излучение | 1 |