subscriber trunk dialling


noun
  1. British a service by which telephone subscribers can obtain trunk calls by dialling direct without the aid of an operator: Abbreviation: STD US and Canadian equivalent: direct distance dialing

Words Nearby 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