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End of an Era | BT Heritage
Автор: UK Archive
Загружено: 2020-06-23
Просмотров: 52963
Описание:
A London Telecommunications Region film showing the transfer of Upminster Exchange, the last CB1 (Central Battery) manual exchange in the London telephone Region to Crossbar (Plessey 5005) automatic: the first to be installed in the LTR and cut over on December 3rd 1970. Shots of CB1 in action, of the new crossbar and the changeover ceremony.
Date: 1970
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