Random Digit Dialing


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Random Digit Dialing

The practice in which a computer generates random telephone numbers to dial. This is done in some phone surveys to ensure a random sample. Random digit dialing can include unlisted phone numbers. It is cost effective in some marketing campaigns, provided the area being dialed has a relatively high phone ownership rate. See also: Do not call list.
References in periodicals archive ?
General public surveys were all conducted between December 2006 and January 2007, using random digit dialing in each country to reach representative samples of adult population aged 15 and older.