TXE1
Only one TXE1 was built and this was installed at Leighton Buzzard on the site of the former Lake House in Lake Street. This exchange type was developed by three members of the Joint Electronic Research Committee, JERC, which was formed in 1956 and lasted until 1969. This consisted of the British Post Office (GPO), Siemens Brothers & Co Ltd (shortly to be part of AEI, who were subsequently merged with GEC in the early 60s), Automatic Telephone & Electric Co. Ltd (known as AT&E and merged with Plessey in 1961), the British company Ericsson Telephones Ltd (also merged with Plessey in 1961) - see ), General Electric Co. (GEC), and Standard Telephones & Cables Ltd. (STC). The three members of the JERC who actually built the exchange were STC, AEI and AT&E. STC built the common control, AEI the switching, line scanning and test console, whilst AT&E took care of the dialling capturing equipment (Registers) and the Incoming and Outgoing Junctions. The actual development of the TXE1 started around 1963, and went into service in 1968. There were models of the AEI equipment at Blackheath, London and of the ATE equipment at Edge Lane, Liverpool. AEI actually called TXE1 their REX (Reed Electronic Exchanges)
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