Meaning of “direct dialling” in the English Dictionary

"direct dialling" in Business English

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direct diallingnoun [ U ]

UK US direct dialing uk us COMMUNICATIONS

the ability to make a phone call without it having to be connected through a switchboard:

The new system incorporates direct dialling, which will make it easier for callers to connect directly with the contact of their choice.

Mobile phones and direct-dial numbers have made the sales business easier today.

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