Director switching device, 1927

Made:
1927 in Edge Hill

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Science Museum Group Collection
© The Board of Trustees of the Science Museum

Science Museum Group Collection
© The Board of Trustees of the Science Museum

Science Museum Group Collection
© The Board of Trustees of the Science Museum

Science Museum Group Collection
© The Board of Trustees of the Science Museum

Director switching device, made by the Automatic Telephone Manufacturing Company, Edge Hill, Liverpool, England, 1927. From the first London director exchange at Holborn. With case.

The Director telephone system was used in some large cities in Britain between the 1920s and the 1970s. In large conurbations there were many telephone exchanges and special means were needed to connect any two callers together. Within such areas, a switching device called a director routed telephone calls between exchanges that were not directly connected with each other. A three-letter code identified each exchange. The first director exchange in Europe was opened at Holborn Exchange, London, in 1927.

Details

Category:
Telecommunications
Object Number:
1971-352
Materials:
metal (unknown), paint and textile
type:
electric switch
taxonomy:
  • component - object
credit:
Donated by the Post Office Telecommunications Museum