Definition of tone dialling noun from the Oxford Advanced Learner's Dictionary


tone dialling

BrE BrE//ˈtəʊn daɪəlɪŋ//
; NAmE NAmE//ˈtoʊn daɪəlɪŋ//
(North American English tone dialing) [uncountable]
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a method of calling telephone numbers in which each number is sent as a combination of tones

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