- direct distance dialing network
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сеть автоматической междугородной телефонной связи
Англо-русский словарь технических терминов. 2005.
direct distance dialing network
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Direct distance dialing — (DDD) or direct dial is a telecommunications term for a network provided service feature in which a call originator may, without operator assistance, call any other user outside the local calling area. DDD requires more digits in the number… … Wikipedia
direct distance dialing — noun : the dialing of a telephone number outside the local calling area by using initial code numbers to make a direct connection abbr. DDD * * * a telephone network service feature enabling customers to direct dial their long distance calls. * * … Useful english dictionary
direct distance dialing — a telephone network service feature enabling customers to direct dial their long distance calls. * * * … Universalium
Long distance — in telecommunications, refers to telephone calls made outside a certain area, usually characterized by an area code outside of a local call area (known in the United States as a local access and transport area or LATA). Long distance calls… … Wikipedia
Integrated Services Digital Network — ISDN redirects here. For other uses, see ISDN (disambiguation). Integrated Services Digital Network (ISDN) is a set of communications standards for simultaneous digital transmission of voice, video, data, and other network services over the… … Wikipedia
toll connecting trunk — Trunk utilized to link a local central office (Class 5) to the direct distance dialing network … IT glossary of terms, acronyms and abbreviations
AT&T Communications — Infobox Company company name = AT T Communications, Inc. company company type = Private (Subsidiary of AT T Corp.) foundation = 1984 location = Bedminster, New Jersey, USA industry = Telecommunications products = Long distance parent = AT T Corp … Wikipedia
Northwestel — Inc. Type Subsidiary Industry Communications Services Founded 1979 Headquart … Wikipedia
Timeline of the telephone — Below is a Timeline of the telephone that covers important dates in the history of the telephone.1844 to 1875*1844 Innocenzo Manzetti first mooted the idea of a “speaking telegraph” (telephone). *1849 Antonio Meucci demonstrates a communicating… … Wikipedia
List of electronics topics — Alphabetization has been neglected in some parts of this article (the b section in particular). You can help by editing it. This is a list of communications, computers, electronic circuits, fiberoptics, microelectronics, medical electronics,… … Wikipedia
Via Net Loss — is a network architecture for telephone calls using circuit switching systems deployed in the 1950s with Direct Distance Dialing and used until the late 1980s. The purpose of the VNL plan and five level long distance switching hierarchy was to… … Wikipedia
