range of modems from a simple acoustic coupler to integrated 'network interfaces' for each of the early home and personal computers. Prism models included the VTX5000, the only modem custom designed for the popular ZX Spectrum, and the more general purpose Modem 1000 and Modem 2000. These were ready-to-use out of a box, so that the buyer would get the modem with all relevant leads, cards (if necessary) and software to connect with Micronet. Some 25,000 subscribers were eventually signed up to Micronet 800 to make it the largest CUG, Closed User Group, on Prestel; its total user base peaked at 90,000. Micronet achieved over 1.1 million page views a week. Its first subscriber, who joined on its opening day, 1 March 1983, was Jeremy Dredge, an estate agent from Thames Ditton in Surrey. Its 10,000th subscriber was Tom Corcoran, a director of BBC television's Top Of The Pops. In 1985 Telemap saw that Prism was preoccupied with its Sinclair computer distribution agency and in developing Prism's own 'luggable' Wren microcomputer, so prospective Micronet subscribers were then sent a list of several other modem suppliers. Following Prism's collapse in 1985 and the subsequent purchase of their stock by Telemap, and in a bid to increase take-up, Micronet 800 encouraged users by giving away a free modem to new users subscribing for a year. However, in a move that saw the demise of Micronet, Prestel priced the home user out of the service with a new pricing structure, adding time charges on top of the phone charges for evening access which effectively killed off home usage even though the network was under-utilized during the 6pm to 8am time-slot. Today this remains the peak usage time of the Internet. Many of the lessons learned with respect to online publishing and interactive services were pioneered by Micronet 800 and became every bit as important with the growth of the Internet. BT became the majority shareholder in 1987 (after a previous 19% Telemap stake had been sold to Bell Canada) initially managing the company as part of BT Spectrum, its Value Added Services Group, before passing the group to BT Prestel. In 1988 the company passed a milestone by becoming the only Value Added Data service to become profitable. In 1989 BT finally acquired the entire company, moved it into a BT building (Dialcom House) in Apsley, just outside Hemel Hempstead in Hertfordshire, and