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What is DSL?
DSL
(Digital Subscriber Line) is a service that offers a faster Internet
connection than a standard dial-up connection. DSL technology uses existing
2-wire copper telephone wiring to deliver high-speed data services to homes
and businesses.
DSL
uses the existing phone line and in most cases does not require an
additional phone line. This gives "always-on" Internet access and does not
tie up the phone line. No more busy signals, no more dropped connections, no
more waiting for someone in the household to get off the phone. DSL offers
users a choice of speeds ranging from 144 Kbps to 1.5Mbps. This is 2.5x to
25x times faster than a standard 56Kbps dial-up modem.
This digital service can be used to deliver bandwidth-intensive applications
like streaming audio/video, online games, application programs, telephone
calling, video conferencing and other high-bandwidth services.
Today DSL is for the first time putting high-speed Internet access within
the reach of the home, small and medium-size businesses. DSL takes existing
voice cables that connect customer premises to the phone company's central
office (CO) and turns them into a high-speed digital link.
Over any given line, the maximum DSL speed is determined by the distance
between the customer site and the Central Office (CO). Most ISP's offer
Symmetric DSL (SDSL) data services at speeds that vary from 144 Kbps to 1.54
Mbps, and now even faster up to 6.0 Mbps--so customers can choose the rate
that meets their specific needs. At the customer premises, a DSL router or
modem connects the DSL line to a local-area network (LAN) or an individual
computer. Once installed, the DSL router provides the customer site with
continuous connection to the Internet and use of the telephone at the same
time.
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