ATM technology has of course been well established for some years. Transmitting up to 155 megabits per second down copper wires. ISDN lines could become obsolete before even established widely. ISDN has always been seen as the next step up for companies and wealthy individuals. However as we have seen, ISDN is likely to be overtaken in two or three years by faster telephone links or cable perhaps, despite the halving in price of ISDN boards in September 1996, to almost the same as a modem.
Cable modems promise vast capacity for video and sound.
Motorola is already reported to be preparing to ship one million cable modems to companies such as Time Warner, TCI and Comcast.