( dialling tones)
The dialling tone is the noise which you hear when you pick up a telephone receiver and which means that you can dial the number you want. ( BRIT; in AM, use dial tone )
N-COUNT
( dialling tones)
The dialling tone is the noise which you hear when you pick up a telephone receiver and which means that you can dial the number you want. ( BRIT; in AM, use dial tone )
N-COUNT
Collins COBUILD Advanced Learner's English Dictionary. Английский словарь Коллинз COBUILD для изучающих язык на продвинутом уровне. 2006