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 Telecommunications Object Thesaurus Term

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Initial Reference:
Vocabulary of Post Office Engineering Stores (1956)

Top term:

Broader term:

Scope notes:
Extensive class of basic component, from simple to extremely complex, working on the principle of a current in one circuit being used to switch current(s) in other circuits. Both electromechanical and, later, electronic and mircoelectronic forms.


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fun and games

Can you beat our games? Explode equipment to see what's inside, hear the changing sounds of telecommunications, see how telecommunications designs have changed over time or send an e-postacard.

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The UK's first permanent gallery dedicated to the history of information and communication technologies opens in the new Information Age gallery at London’s Science Museum.

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100 years of automatic switching!
In 1912 the GPO installed Britain's first automatic telephone exchange in Epsom.

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