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ITU GLOBAL STANDARD TO INCREASE INTERNET SPEED.
(Industry Trend or
Event)(Brief Article)
The International Telecommunication Union (ITU), the United Nations'
specialized agency for telecommunications, has reached an agreement on a new
global standard for Single pair High bit-rate Digital Subscriber Line (SHDSL)
transceivers, which will allow network operators to economically and efficiently
offer leased-line services to business customers using existing copper loops.
SHDSL enables data, voice and video to be transmitted over distances never
before attainable by other types of symmetric DSL technology.
The approved standard, designated ITU-T Recommendation G.991.2, is effective
immediately.
SHDSL enables operators to provide symmetric, high-speed data transmission
over existing copper pairs without requiring the installation of additional
cable. It is a multi-rate DSL technology that allows data rates from 192 kbits
to 2,312 bits and can transport T1 (1,544 kbits), E1 (2,048 kbits), ISDN, ATM,
and IP signals. The framing to support these various types of signals is
negotiated at start-up using the "handshaking" protocol defined in
ITU-T Recommendation G.994.1.
The new standard has strong commonality with regional standards and has been
designed to prevent interference to other DSL systems operating in the same
cable.
ITU also approved the first of a set of standards for Home Phone-line
Networking transceivers, ITU-T Recommendation G.989.1. This will allow home
networking devices (e.g. computer peripherals) to operate over existing
telephone wiring.
ITU also stated that its work on the future evolution of the family of ITU-T
DSL (Digital Subscriber Line) Recommendations is well underway on potential
enhancements, including topics such as even higher bit rates and support of
combined voice and data access for both symmetrical and asymmetrical operations.
For further information contact: International Telecommunication Union (ITU),
Place des Nations, CH-1211 Geneva 20, Switzerland. Telephone: +41 022 730-5111.
Fax: +41 22 733-7256. URL: http://www.itu.int/newsroom
COPYRIGHT 2001 Information Intelligence, Inc.
COPYRIGHT 2001 Gale Group
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