direct distance dialing network
1Direct 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… …
2direct 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. * * …
3direct distance dialing — a telephone network service feature enabling customers to direct dial their long distance calls. * * * …
4Long 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… …
5Integrated 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… …
6toll connecting trunk — Trunk utilized to link a local central office (Class 5) to the direct distance dialing network …
7AT&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 …
8Northwestel — Inc. Type Subsidiary Industry Communications Services Founded 1979 Headquart …
9Timeline 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… …
10List 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,… …
