Telephone number

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Telephone number

A telephone number is a sequence of digits assigned to a fixed-line telephone subscriber station connected to a telephone line or to a wireless electronic telephony device, such as a radio telephone or a mobile telephone, or to other devices for data transmission via the public switched telephone network (PSTN) or other public and private networks.

Pronunciation

  • /ˈtɛlɪfoʊn ˈnʌmbər/

Etymology

The term "telephone number" is derived from the Greek words "tele" meaning "far" and "phone" meaning "voice", combined with the Middle English word "number".

Related Terms

  • Area code: A three-digit number that identifies one of the telephone service regions into which the United States, Canada, and certain other countries are divided.
  • Country calling code: A telephone number prefix assigned to each country, territory or geographic area in the international telephone system.
  • Subscriber trunk dialling: A system of using long-distance telephone lines for making telephone calls to subscribers in other localities without operator assistance.
  • Direct Inward Dialing: A service of a local phone company (or local exchange carrier) that provides a block of telephone numbers for calling into a company's private branch exchange (PBX) system.
  • Extension (telephone): A telephone in a dialing plan that is connected to a PBX or Centrex system, identified by a number usually from one to four digits long.

External links

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