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A telephone directory, commonly called a telephone book, telephone address book, phonebook, or the white and yellow pages, is a listing of telephone subscribers in a geographical area or subscribers to services provided by the organization that publishes the directory. Its purpose is to allow the telephone number of a subscriber identified by ...
In the United Kingdom, telephone numbers are administered by the Office of Communications ( Ofcom ). For this purpose, Ofcom established a telephone numbering plan, known as the National Telephone Numbering Plan, which is the system for assigning telephone numbers to subscriber stations. Telephone numbers are of variable length.
From the introduction of the telephone in the late 1870s, [5] to the early 1990s, telephone numbers in most of the United Kingdom were usually shown with a written exchange name followed by the subscriber number, e.g. 'Mallaig 10' or 'Aberdeen 43342'. This allowed calls to be placed initially through the operator and later by using local or ...
The number could be dialled as 387-1234 or spoken to a manual exchange operator as Euston 1234 . London manual exchanges were gradually converted to Director automatic exchanges from 1927. Holborn was the first, at midnight on Saturday 12 November, a local and tandem exchange. Bishopgate and Sloane exchanges followed in six weeks, then Western ...
The yellow pages are telephone directories of businesses, organized by category rather than alphabetically by business name, in which advertising is sold. The directories were originally printed on yellow paper, as opposed to white pages for non-commercial listings. The traditional term "yellow pages" is now also applied to online directories ...
Toll-free directory assistance. In the U.S., directory assistance for companies with toll-free "800 numbers" (with area codes 800, 833, 844, 855, 866, 877, and 888) was available from toll-free directory assistance, reachable by dialing 1-800-555-1212, for many decades until it was discontinued in 2020.
The British companies Pye TMC, Marconi-Elliott and GEC developed the digital push-button telephone, based on MOS IC technology, in 1970. It was variously called the "MOS telephone", the "push-button telephone chip", and the "telephone on a chip". It used MOS IC logic, with thousands of MOSFETs on a chip, to convert the keypad input into a pulse ...
Hull Colour Pages. KC Colour Pages and KC White Pages are the classified and residential telephone directories provided specifically for the Kingston Communications service area. KC Colour Pages became the UK 's first classified telephone directory when it was first published in 1954 to celebrate KC's 50th anniversary as Hull's telephone company.
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