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List of telephone exchanges in London. This is a list of telephone exchanges located within Greater London. [1] Occasionally, in areas of high demand, two exchanges are located at the same premises; for example Canary Wharf and Poplar.
27 de abr. de 2023 · This is a list of telephone exchanges located within Greater London. Occasionally, in areas of high demand, two exchanges are located at the same premises; for example Canary Wharf and Poplar.
In the United Kingdom, the first Director exchange in London, Holborn Tandem, was cutover in 1927; preceded by any necessary changes in the London area, e.g. changing some exchange names and making all local numbers (4N) 4-digit.
The following exchanges are located outside Greater London, but use the London 020 dial code.
A telephone exchange is a telephone system for a small geographic area that provides the switching (interconnection) of subscriber lines for calls made between them. Telephone exchanges replaced small telephone systems that connected its users with direct lines between each and every subscriber station.
But for London this required development of the Director telephone system by the Automatic Telephone Manufacturing Company (ATM) to enable operation with a mixture of both automatic and manual local exchanges in the London area for several decades.
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.
