Telephone crossbar switch RVD 211, 1970

Made:
1970 in Sweden

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Creative Commons LicenseThis image is released under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence

Buy this image as a print 

License this image for commercial use at Science and Society Picture Library

Creative Commons LicenseThis image is released under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence

Buy this image as a print 

License this image for commercial use at Science and Society Picture Library

Creative Commons LicenseThis image is released under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence

Buy this image as a print 

License this image for commercial use at Science and Society Picture Library

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

Telephone crossbar switch RVD 211, made by Swedish Ericsson, Sweden, 1970.

Crossbar switching dates back to the earliest days of manual telephone switchboards, which used sets of overlapping brass bars with holes at the intersections for brass plugs to connect telephone calls. The first true crossbar switches were developed in 1913 by an engineer at Western Electric in the United States. Over the years, many different companies developed their own version of crossbar switches. They were widely used across Europe and in Britain, particularly in the 1960s and 1970s.

On display

Science Museum: Information Age Gallery: Exchange

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Details

Category:
Telecommunications
Object Number:
1970-455
Materials:
metal (unknown), paint
type:
electric switch
taxonomy:
  • component - object
credit:
Donated by L. M. Ericsson
status:
Permanent collection

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