5
Introducing DSL258E
This section gives a brief introduction of DSL258E features and its specifications.
Chapter
1
Congratulations on your purchase of the DSL Turbo 258E / DSL
TurboRouter 258E ADSL Bridge & Router Modem !
ADSL
, which stands for
Asymmetric Digital Subscriber Line
, is the latest
communication technology that offers faster and uninterrupted Internet access.
Its always-on, real-time, interactive and broadcast-quality is ideal for services
such as video-on-demand, collaborative computing and distance learning.
The DSL258E(B) (DSL Turbo 258E) and DSL258E(R) (DSL TurboRouter 258E)
are Controller-based External ADSL over ISDN G.dmt Annex B Bridge modem/
Router with Ethernet Interface respectively.
DSL258E
is capable of data rate in Full-Rate,
at up to 8 Mbps downstream
and
640 Kbps upstream
.
Both use Analog Device AD20MSP930 (ADI930) for the ADSL physical layer and
Viratas Helium for layer 2 and layer 3 processing. Both also have an in-built
ISDN splitter for ease of usage and less cumbersome installation.
DSL258E is an embedded solution that is OS independent. It can be connected to
any computer with an Ethernet card.
To ensure the broadest customer reach, the DSL258E features multiple data
encapsulation formats for DSL transport over ATM PVCs, including the widely
supported ADSL protocols
RFC 1483 (MPoA)
,
RFC 1577 (IPoA)
and
RFC 2364
(PPPoA)
.
