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In the United Kingdom, telephone numbers are administered by the Office of Communications ().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.
This is a list of telephone dialling codes in the United Kingdom and the Crown Dependencies, which adopts an open telephone numbering plan for its public switched telephone network. The national telephone numbering plan is maintained by Ofcom , an independent regulator and competition authority for the UK communications industries.
London had a large network of manual exchanges (80 in 1927) and individual telephone exchanges were given names, e.g. Ebbsfleet; a caller asked the operator for Ebbsfleet 1234. However, although the General Post Office (GPO) had commenced installation of automatic exchanges from 1912, the basic Strowger or SXS switch adopted as standard by the ...
BT Archives is based in Holborn Telephone Exchange on High Holborn in Central London and is open, by appointment, to public researchers on Wednesdays and Thursdays from 10:00am – 4:00pm. There is no access charge. Holborn was the first public automatic exchange in London in 1927, see Director telephone system.
However, it was not until 1927 that the first "Director" telephone exchange was brought into service in Holborn, London and rolled out progressively across Greater London. Letters were assigned to each number from 2 to 0 on the telephone dial and a three-digit code, represented by letters, identified the local exchange.
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 ...
The red telephone box is a telephone kiosk for a public telephone designed by Sir Giles Gilbert Scott, the architect responsible for Liverpool Cathedral. The telephone box is a familiar sight on the streets of the United Kingdom , its associated Crown Dependencies , British Overseas Territories and Malta .
Telephone numbers listed in 1920 in New York City having three-letter exchange prefixes. In the United States, the most-populous cities, such as New York City, Philadelphia, Boston, and Chicago, initially implemented dial service with telephone numbers consisting of three letters and four digits (3L-4N) according to a system developed by W. G. Blauvelt of AT&T in 1917. [1]