The World is Already Wired for
Multimedia Communications
Copper Lines Connect Subscribers Today
Telephone lines used to be thought of as
adequate only for voice transmission but advances in technology have expanded their
capacity to much higher transmission capacities. Digital Subscriber Line (DSL)
is the leading technology enabling ordinary twisted pair equipped with DSL modems to
transmit movies, television, dense graphics, and very high speed data.More than 800 million such lines exist around the
world today; new cabling, whether fiber alone or combined with coax, will take decades to
replace them all. With DSL, telephone companies can connect almost every home and
business to exciting new interactive broadband services now.
A single DSL line offers simultaneous
channels for personal computers and televisions while leaving ordinary telephones
undisturbed. For example, a family in an DSL home might be engaged as follows:
Joe, home from college, watches a movie on
one TV
Allison, still in high school, does interactive homework on another TV
Mom accesses her corporate Local Area Network (LAN) at high speeds on her PC
And video conferences with her project group on the same PC
Dad surfs the Internet on his PC at warp speeds
A fax arrives from a colleague
DSL is Essential to the Success of
the New Information Infrastructure
DSL will play a crucial role over the next
twenty years as telephone companies enter new markets connecting subscribers to the
Internet and delivering information in video and multimedia formats. New broadband cabling
will take decades to reach all prospective subscribers but success of these new services
is dependent upon reaching as many subscribers as possible during the early years.
Bringing the Internet, corporate LANs and movies into homes and small businesses soon,
DSL will make these markets viable for telephone companies and application suppliers
alike.
DSL Gives Telephone Companies Time
to Market Advantage over Competition.
Telephone companies worldwide are facing
competition for the first time. Their most formidable weapon is twisted pair copper,
already connecting every prospective customer to a switching center. DSL lets them
capitalize on this existing asset.
DSL goes in only when a customer
requests service.
DSL is on-demand technology. It can be offered case by case as customers request
broadband connections without expensive neighborhood recabling.
DSL connects widely dispersed
business and residential users
Corporate LANs, Intranets and the Internet are vital fabrics in todayís business
environment connecting businesses such as doctors, lawyers, teachers, real estate agents,
small retailers, software developers, students, and telecommuters. Leveraging the existing
twisted pair infrastructure with DSL provides a broadband network with the speed that
todayís applications demand.
DSL services small business and
remote branch offices.
Small businesses and remote branch offices
require access to high speed data services today and interactive video in the future. New
cabling is only planned for residential areas.
DSL, Already Proven Viable, Moves
into Commercial Development.
DSL technology has been accepted internationally and standards bodies throughout the
world have adopted it: American National Standards Institute, which approved the initial
standard, is in the final phases of approving an updated version. With market trials
complete telephone companies have started the full scale deployment of the technology.
Early in 1998 a new consortium, the
Universal DSL Working Group (UAWG), was formed to accelerate the definition of a lower
speed technology G.Lite which is a compatible subset of the full DSL standards. Product
rollout for G.Lite modems is targetted at the end of 1998.
The DSL Forum, with nearly 300 member
companies, has taken the lead in developing the architectures, protocols, test
methodologies and migration paths for DSL. DSL can literally transform the existing
information system from one limited to voice, text and low resolution graphics to a
powerful, ubiquitous network capable of bringing multimedia to everyone's home or small
business -- this century. Why wait?
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