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G.shdsl is the newest DSL technology targeted at the small
to medium sized business market. Approval of the standard by
the ITU-T in early February, 2001 cleared the way
for service providers worldwide to deploy the technology,
which combines the spectral, reach, and interoperability
benefits of ANSI HDSL2 and ETSI SDSL. With the Express 6503,
carriers can offer enterprise customers a unique customer
premise solution for utilizing existing frame relay routers
while taking advantage of the benefits offered by G.shdsl
transport. G.shdsl delivers symmetric data rates up to 2.3
Mbps over a single copper pair at up to 30 percent greater
distances and at a 35 to 45 percent higher data rate than
2B1Q-based SDSL, and it’s rate adaptive. Its TC-PAM modulation
technique ensures spectral compatibility with other DSLs
deployed in the same binder group.
The Express 6503 is a serial(DTE) to G.shdsl data service unit
designed for small offices and branch offices to provide
cost-effective access to high-speed G.shdsl services. The
Express 6503 preserves the customer’s investment in existing
business class routers, allowing them to take advantage of
next generation ATM applications. It offers an excellent
cost-effective migration path utilizing ATM and Frame Relay
over G.shdsl without having to replace existing networking
equipment.
The Express 6503 provides small offices and branch offices
with fast, affordable, and easy to use access to the Internet
and corporate
network. The Express 6503 serial G.shdsl DSU allows DSL
services and applications to be available to the office router
or to the desktop. It supports an integrated G.shdsl WAN
interface and a serial interface to the router and can operate
at symmetric speeds of up to 2312kbps.
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