pulse dialing

pulse dialing

noun
a system of calling telephone numbers wherein electrical pulses corresponding to the digits in the number called are generated by manipulating a rotary dial or push buttons (contrasted with tone dialing ).
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Main Entry:  pulse dialing
Part of Speech:  n
Definition:  an older mode of telephone dialing with each digit transmitted via electrical pulse; also written pulse dialling
Dictionary.com's 21st Century Lexicon
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