A Brief Introduction to ISDN

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 A Brief Introduction to ISDN  





In today’s wired and connected world with more and more people connected to the Internet and to each other, we are relying on the transfer of large amounts of information through telephone lines and analog modems to our computers for business, entertainment, and education. Most of us are currently locked into using the established analog modem technology, such as the 14,400 bps to 56,000 bps modems. Web pages, the documents found on the World Wide Web, provide increasing amounts of data such as video, sound files, and animated graphics; with each passing month there are new technologies that are being applied to the Internet and World Wide Web. As data, graphic, audio, video, and program file sizes continue to grow larger with every release, we are forced to look for cost-effective methods of high-speed data transfer.

There are an estimated 90 to 150 million users on the Internet, and this number should grow by 10 to 20 million more users during this year. The decreasing cost of computers means there will be several million more Internet users during 1999. Some computer sellers have been providing an Internet hosting service as a part of the computer package. Almost all the computer sellers and resellers are adding preinstalled software for major Internet providers: Microsoft Network (msn.com), America Online (aol.com), CompuServe (compuserve.com), and others. There are computer companies that include an ADSL modem in certain models. Other companies are making certain computer models cable modem-ready by adding a network port and card.

The U.S. government is trying to get as many schools wired with the Internet as they can. This will increase the number of Internet connections even more. With more users on the Internet, the speed with which data is transferred slows, especially when using analog modems. The older telephone technology called ISDN is gaining more attention because of its high-speed data transfer and increased use as the pricing for this service and the needed hardware has dropped to cost-effective levels. ISDN is the answer for many who have an increasing need for high-speed transfers of computer data with constant Internet access and a second phone line (data channel) available for telephone use. The single digital line with two channels of ISDN (BRI) and a control channel lends itself very well to small and medium-sized businesses. The digital connection helps you avoid the analog traffic jams on the information superhighway, the Internet.





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