subscriber trunk dialling


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subscriber trunk dialling

n
(Telecommunications) Brit 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
Translations

subscriber trunk dialling

nteleselezione f
References in periodicals archive ?
Not sexually transmitted disease, but Subscriber Trunk Dialling.
In the 1950s there was no subscriber trunk dialling (STD) - which would have allowed subscribers to dial trunk calls without operator assistance.
London, Dec 5 (ANI): On December 5, 1958, the Queen made the first long-distance phone call without the help of an operator, making today the 50th birth anniversary of Subscriber Trunk Dialling or STD.