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What is ISDN?
ISDN (Integrated Services Digital Network) is an evolution of
the digital telephony network, allowing users to communicate
(voice, fax, video, data, music, etc.) over fully digital lines,
virtually error-free, using a single set of interface standards.
Telephone networks around the world have been moving
towards digital transmission and switching for some time. Not
only has this made ISDN possible, but the size of the world-
wide telephone network means that ISDN is widely available.
ISDN was designed to work in conjunction with traditional,
analog telephone service. Users who subscribe to ISDN services
can make voice calls to, and receive voice calls from users of
traditional services.
The WEBGLIDER may be thought of as a “digital modem” and
can be used to communicate with other digital modems (TAs)
through an ISDN connection.
Some major benefits of ISDN include its ability to provide:
• up to two simultaneous voice conversations over one physical
line.
• voice, circuit-switched data and packet data services.
• flexibility in arrangements between services, telephone numbers,
and telephone sets.
• new applications to the home and office.
• noise-free operation over existing lines.
• digital connection.
