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Direct distance dialing

Direct distance dialing (DDD) is a telecommunications service in North America by which a caller may call any other subscriber outside the local calling area without operator assistance. DDD was introduced in the United States in 1951, on a trial basis, with service from Englewood, New Jersey. Direct long-distance dialing by subscribers requires extra…

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Overview

History

Hardware

IDDD

Equivalent service in the United Kingdom

Advanced semantic analysis

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Map overview Semantic statistics

Direct distance dialing

Nodes82
Edges81
Triples47
Avg. degree1.98
Density0.02439
Components1

How this topic connects Entity context

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Direct distance dialing

Top relations

related to IDDD · 24
Direct distance dialing → Americas, Atlantic, Avenue, Caribbean Islands, DDD, England, ESS, Gateway, IDDD, In, International Direct Distance Dialing, London, LT1, March, New York, North America, Other, Paris, Some, Street
related to References · 12
Direct distance dialing → Archived, Cuccia, Dialing Cut In, Federal Standard, General Services Administration, Mark, MIL-STD-188, Re, Retrieved, TELECOM Digest, This, When Was Direct Distance
related to Equivalent service in the United Kingdom · 11
Direct distance dialing → Bristol, Commonwealth, December, Edinburgh, In, ISD, Lord Provost, Nations, Queen Elizabeth II, STD, United Kingdom

Important terminology Word statistics

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Important terminology

code area system dialing new telephone number ddd direct service toll used equipment distance 318 switching switch long-distance international north

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Direct distance dialingrelated to Equivalent service in the United KingdomIn0.60section
Direct distance dialingrelated to Equivalent service in the United KingdomUnited Kingdom0.60section
Direct distance dialingrelated to Equivalent service in the United KingdomCommonwealth0.60section
Direct distance dialingrelated to Equivalent service in the United KingdomNations0.60section
Direct distance dialingrelated to Equivalent service in the United KingdomSTD0.60section
Direct distance dialingrelated to Equivalent service in the United KingdomISD0.60section
Direct distance dialingrelated to Equivalent service in the United KingdomQueen Elizabeth II0.60section
Direct distance dialingrelated to Equivalent service in the United KingdomDecember0.60section
Direct distance dialingrelated to Equivalent service in the United KingdomBristol0.60section
Direct distance dialingrelated to Equivalent service in the United KingdomEdinburgh0.60section
Direct distance dialingrelated to Equivalent service in the United KingdomLord Provost0.60section
Direct distance dialingrelated to IDDDIn0.60section

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