direct distance dialing


noun

a telephone network service feature enabling customers to direct-dial their long-distance calls.

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British Dictionary definitions for direct distance dialing

direct distance dialing

noun

US and Canadian a service by which telephone subscribers can obtain long-distance calls by dialling direct without the aid of an operatorBritish equivalent: subscriber trunk dialling
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012