Meaning of “pulse dialling” in the English Dictionary

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"pulse dialling" in Business English

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pulse diallingnoun [ U ]

uk us also US pulse dialing COMMUNICATIONS

a system that is used to make a connection with the telephone line by interrupting a continuous signal. In many parts of the world pulse dialling has been replaced by tone dialling:

Modern equipment will allow switching between pulse and tone dialling modes.

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(Definition of “pulse dialling” from the Cambridge Business English Dictionary © Cambridge University Press)