Реферат: ADSL Essay Research Paper Overview

provide bit rates of up to 60 Mbps at 1000 feet and 12 Mbps at 6000 feet,

which it planned to release in the first quarter of 1997. Unfortunately

for most subscribers, the cost is still prohibitive, with Amati’s

device coming in at $2500. Other manufacturers, such as Northern Telecom,

Motorola, Ericsson Inc., Teltrend,

Aware, Inc., Analog

Devices, Inc., and Alcatel Data

Networks, have also announced products for delivery in 1997, which

should lower costs.

ADSL service, which was originally delegated to the background and frequently

ignored, has suddenly become the means for the telephone companies to

compete in the information delivery business. Faced with an outmoded network

of noisy copper lines, the telephone companies appeared to be in a losing

battle with the cable television industry and its coaxial network and

cable modems. Now ADSL has allowed the telephone companies to use their

existing networks to provide expanded interactive and video services to

their subscribers. Ultimately, both industries want to replace their networks

with fiber or fiber/coax, but realistically, this could take 15 to 20

years. In the meantime, ADSL will provide subscribers with another option

for high-speed data service.

Bibliography

Newton, Harry

"Newton’s Telecom Dictionary" Flatiron Publishing Inc.,

New York, 1994

www.prnewswire.com,

August 22, 1996

www.prnewswire.com,

August 27, 1996

www.prnewswire.com,