Telephone exchange — A telephone operator manually connecting calls with cord pairs at a telephone switchboard. In the field of telecommunications, a telephone exchange or telephone switch is a system of electronic components that connects telephone calls. A central… … Wikipedia
Telephone number — A telephone number or phone number is a sequence of digits used to call from one telephone line to another in a public switched telephone network. When telephone numbers were invented, they were short as few as one, two or three digits and were… … Wikipedia
telephone — telephoner, n. /tel euh fohn /, n., v., telephoned, telephoning. n. 1. an apparatus, system, or process for transmission of sound or speech to a distant point, esp. by an electric device. v.t. 2. to speak to or summon (a person) by telephone. 3.… … Universalium
Telephone numbering plan — Area Code redirects here. For the song by Ludacris, see Area Codes (song). A telephone numbering plan is a type of numbering scheme used in telecommunications to allocate telephone numbers to subscribers and to route telephone calls in a… … Wikipedia
Telephone numbers in Nigeria — The area codes in Nigeria vary between 1 (Lagos and Ibadan) and 3 (for GSM networks) digits long. The non GSM mobiles are given area codes of the geographical location where they are registered.Calling formatsTo call in Nigeria, the following… … Wikipedia
Telephone Number Mapping — (ENUM or Enum, from E.164 NUmber Mapping) is a suite of protocols to unify the telephone numbering system E.164 with the Internet addressing system DNS by using an indirect lookup method, to obtain NAPTR records. The records are stored at a DNS… … Wikipedia
Telephone numbers in the United Kingdom — +44 redirects here. For the band, see +44 (band). United Kingdom telephone numbers Location of United Kingdom (dark green) Location Country United Kingdom Continent … Wikipedia
Telephone switchboard — PBX switchboard, 1975 A switchboard (also called a manual exchange) was a device used to connect a group of telephones manually to one another or to an outside connection, within and between telephone exchanges or private branch exchanges (PBXs) … Wikipedia
Telephone numbers in Gibraltar — Until February 10 2007, Spain imposed restrictions on Gibraltar s ability to expand and modernise its telecommunications infrastructure. These included a refusal to recognise International Direct Dialling (IDD) code which restricted the expansion … Wikipedia
Telephone numbers in Vietnam — Country Code: 84International Call Prefix: 00 Land lines The land line phone numbers in Vietnam follows the format Area Code + Phone Number. The area codes depend on the province and/or city.To dial a number within a province and/or city, only… … Wikipedia
Telephone numbers in the Republic of Ireland — Numbers on the Irish Telephone Numbering Plan are regulated and assigned to operators by Comreg. The numbers are assigned as follows:Overview and historyCountry Code: 353 International Call Prefix: 00Telephone numbers in Ireland are similar in… … Wikipedia
