Newspaper article THE JOURNAL RECORD

New At&t Data Transmission Circuit 30 Times Faster Than Current Model

Newspaper article THE JOURNAL RECORD

New At&t Data Transmission Circuit 30 Times Faster Than Current Model

Article excerpt

NEW YORK - American Telephone and Telegraph Co. plans to offer big customers a circuit that transmits data over optical fibers 30 times as f ast as its current top-of-the-line model, the company has announced.

The service will most likely be used by large businesses, government agencies, and even telephone companies that lease the lines to provide their own long-distance services, AT&T said.

AT&T Communications has applied to the Federal Communications Commission to begin offering the service Jan. 3. It said service originally would be limited to cities on the East and West coasts and parts of the Southwest, but would expand by the end of 1988 to more than 120 metropolitan areas.

AT&T is one of a number of large companies that are rushing to install optical-fiber cables for carrying large volumes of voice, data and video transmissions. Optical fibers are hair-thin strands of pure glass that carry pulses of light representing digitally encoded information.

Accunet T45, as the new service is called, is capable of carrying 45 million bits of data per second, or the equivalent of 4,500 pages of digital information each second.

Although that capacity is great enough to carry a broadcast-quality television signal, AT&T's optical fibers are not ready to take business away from satellite TV transmission systems.

The optical fibers cannot yet carry TV pictures because Bell Labs engineers have not yet figured out a way to monitor and test the signal for clarity without interrupting it, according to Dick Flynn, district manager of service development responsible for the T45.

He said it should be possible to carry TV signals over long distances by 1987. …

Search by... Author
Show... All Results Primary Sources Peer-reviewed

Oops!

An unknown error has occurred. Please click the button below to reload the page. If the problem persists, please try again in a little while.