direct distance dial 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
public network — Normal voice telephone systems; also called the direct distance dial (DDD) network … Dictionary of networking
Network effect — Diagram showing the network effect in a few simple phone networks. The lines represent potential calls between phones. In economics and business, a network effect (also called network externality or demand side economies of scale) is the effect… … Wikipedia
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
NBC Red Network — NBC Red Network/ NBC Radio Network Type Radio Network Country … 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
Northwestel — Inc. Type Subsidiary Industry Communications Services Founded 1979 Headquart … Wikipedia
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
