AT&T Network Systems International expects a surge in investment as carriers rush to modernise telephone networks: it wants to take advantage of this to turn AT&T into a major equipment supplier in Europe; the goal is to have roughly 20% of the market in Europe in less than 10 years; at present it has 4% of the $2,400m market; growth will be through increasing turnover but could include aquisitions; the firm feels that in Europe operators have not invested enough in network management systems; the Asynchronous Transfer Mode system for data and images along one line and is expected to be the main telecommunications technology early next century.