Matches in DBpedia 2015-10 for { <http://dbpedia.org/resource/Telephone_exchange_names> ?p ?o }
- Telephone_exchange_names abstract "A telephone exchange name or central office name was a distinguishing and memorable name assigned to a telephone exchange. It identified the central office to which a telephone was connected. Each exchange served a maximum of 10,000 subscriber lines identified by the last four digits of the telephone number. Areas or cities with more subscribers were served by multiple exchanges, possibly hosted in the same central office building. The leading letters of a central office name were used as the leading components of the telephone number representation, so that each telephone number in an area was unique. These letters were mapped to digits which was usually indicated visibly on a dial telephone.Several systematic telephone numbering plans existed in various communities, sometimes evolving over time as the subscriber base outgrew older numbering schemes. A widely used numbering plan was a system of using two letters from the central office name with five digits, which was designated as 2L-5N, but some large cities initially selected plans with three letters (3L-4N). In 1917, W. G. Blauvelt of AT&T proposed a mapping system that displayed three letters with the digits 2 through 9 on the dial.Telephone directories or other telephone number displays, such as in advertising, typically listed the telephone number showing the significant letters of the central office name in bold capital letters, followed by the digits that identified the subscriber line. On the number card of the telephone instrument, the name was typically shown in full, but only the significant letters were capitalized, while the rest of the name was shown in lower case, such as TAylor 4725, or as small caps.Telephone exchanges were used in many countries, but were phased out for all-numeric system by the 1960s. In the United States, the introduction of area codes, direct-distance dialing were precursors to all-number calling systems around the world, such as the British all-figure dialling.".
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- Telephone_exchange_names wikiPageWikiLink Transylvania_6-5000_(1963_film).
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- Telephone_exchange_names wikiPageWikiLinkText "'''ME'''ridian".
- Telephone_exchange_names wikiPageWikiLinkText "'''TI'''m e".
- Telephone_exchange_names wikiPageWikiLinkText "'''WE'''ather".
- Telephone_exchange_names wikiPageWikiLinkText "ANdrew".
- Telephone_exchange_names wikiPageWikiLinkText "DOMinion".
- Telephone_exchange_names wikiPageWikiLinkText "OLiver 2".
- Telephone_exchange_names wikiPageWikiLinkText "Telephone exchange names".
- Telephone_exchange_names wikiPageWikiLinkText "exchange name".
- Telephone_exchange_names wikiPageWikiLinkText "exchange names".
- Telephone_exchange_names wikiPageWikiLinkText "exchange".
- Telephone_exchange_names wikiPageWikiLinkText "name given to the exchanges".