Open Systems communications software specialist LDR Systems Ltd of Aldershot is being acquired by Canadian software company Sydney Development for UKP3m in shares. LDR, part-owned by L M Ericsson and a subsidiary of the National Coal Board pension fund, is due to sign with Sydney today according to Computer Weekly. LDR had profits of UKP200,000 on turnover of UKP1.8m in 1986, and has been instrumental in implementing Open Systems projects worldwide with its Isonet software. Isonet was claimed to be the first ever full seven layer implementation of the Open Systems Interconnection architecture. Customers include the Department of Trade and Industry, the National Aeronautics & Space Administration, Burroughs, Stratus, Lloyds Bank International and the Swedish PTT. Syndey’s range of communications software includes its flagship Messenger 400 X400 package, and it distributes IBM System 36 and 38.The UK subsidiary, based in London SW, will join forces with the LDR team in Aldershot, and will reorganise into three divisions – communications; information systems; and manufacturing software.