Hungary will invite offers next month from companies that want to help tie the country into the pan-European digital cellular telephone network by the turn of the century: the Ministry of Transport & Communications says Hungary will grant two concessions to set up 900MHz digital cellular systems to handle at least 200,000 subscribers, Reuter reports from Budapest; parliament will have to adopt new telecommunications legislation before contracts can be awarded, but the ministry is hoping to have the network in place within five years; the single 450MHz analogue network is run by the Westel joint venture between state-owned Hungarian Telecommunications Co and US West Inc.