Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 167,711 pages of information and 247,105 images on early companies, their products and the people who designed and built them.
Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 147,919 pages of information and 233,587 images on early companies, their products and the people who designed and built them.
British Telecommunications Systems was formed by British Telecom, GEC, Standard Telephones and Cables and Plessey Co in 1979 to market overseas the exchange, developed at a cost of £200 million.
Developing 'System X', the advanced electronic telephone exchange. By 1982 still had no orders for it.
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