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ISDN (INTEGRATED SERVICES DIGITAL NETWORK)
ISDN - Integrated Services Digital Network - offers inexpensive dialed, fully digital access to the worldwide telecommunications network - all through standard copper telephone lines. It's no longer necessary to lease costly dedicated lines for high-speed digital transmission, or to limit data speeds to the plodding modems of dialed analog technology. Today, ISDN is available in a rapidly growing number of areas throughout the NYNEX region. With some 500,000 lines now in service nationwide, ISDN is one of the most rapidly growing telecommunications technologies in the world.
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