What is ISDN


Integrated Services Digital Network (ISDN) is comprised of digital telephone and data transport services offered by regional telephone carriers. ISDN involved the digitization of the telephone network, which permits voice, data text  graphics  music video, and other source material to be transmitted over existing telephone wires. The  emergence  of ISDN  represents an effort to standardize subscriber services, user/network interfaces, and network and internet work  capabilities. ISDN application include high-speed image applications additional telephone line in homes to serve the telecommuting  industry, high speed file transfer, and videoconferencing  voice services is also an application for ISDN.

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