Grace's Guide

British Industrial History

Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 134,030 pages of information and 213,093 images on early companies, their products and the people who designed and built them.

GPT

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1990.

GEC Plessey Telecommunications (GPT) of Edge Lane, Liverpool

1986 The General Electric Company (GEC) attempted a takeover of Plessey in 1986 but was barred by regulatory authorities.

1st April 1988 GEC and Plessey Co merged their telecommunications businesses as GEC Plessey Telecommunications, commonly known as GPT. GPT was a world leader in many fields, for example Synchronous Digital Hierarchy (SDH) technology, and this brought the two companies responsible for developing and building the System X telephone exchange together, which was supposed to make selling System X simpler.

1989 GEC and Siemens acquired the Plessey Co through the joint company GEC Siemens plc. While most of Plessey was divided between the companies GPT remained a joint venture, with a 60/40 shareholding between GEC and Siemens respectively. GEC Plessey Telecommunications officially renamed itself GPT (no longer standing for anything) because Plessey no longer existed (except Plessey Semiconductors retained its name).

August 1998 GEC acquired Siemens' 40% stake in GPT and merged with the telecoms units of its Italian subsidiary Marconi SpA, GEC Hong Kong and ATC South Africa to form Marconi Communications.

1997 in the UK, the name GPT disappeared and the company was called SGCS (Siemens GEC Communication Systems).


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