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What Is ISDN?
Beginning of paper
ISDN, which stands for integrated services digital network, is a system of
digitizing phone networks which has been in the works for over a decade. This
system allows audio, video, and text data to be transmitted simultaneously
across the world using end-to-end digital connectivity.
The original telephone system used analog signals to tr .... Middle of paper
.... into an analog format to travel through the public phone network.
However, there is a limit to the amount of information that a common analog
telephone line can hold. Currently, it is about 28.8 kbit/s. [Hopkins] ISDN
allows multiple digital channels to be operated simultaneously through the same
regular phone jack in a home or office. The change comes about when the
telephone company's switches are upgraded to handle digital cal ....
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Number of words: 5167
Number of pages: 19 (approx. 250 words per double-spaced page)
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