direct distance dialing


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direct distance dialing

[də¦rekt ¦dis·təns ′dīl·iŋ]
(communications)
A telephone exchange service that allows a telephone user to dial subscribers outside the local area using a standard routing pattern from the local or end office.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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