LANCOM Wireless DSL – LANCOM Wireless ADSL
Chapter 1: Introduction
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EN
1 Introduction
DSL technology permits high-speed Internet access via conventional tele-
phone lines. DSL features an outstanding price/performance ratio and is very
popular among private users as well as small and mid-sized businesses. All of
the devices of the LANCOM Wireless DSL series are fully-featured routers that
therefore also can be used for providing Internet access to a complete local
network (LAN).
The models of the LANCOM Wireless DSL series offer each a DSL or ADSL con-
nector and also an ISDN connector. The ISDN line can be used as back-up for
the DSL connection, for remote management of the router or as basis for the
office communication via LANCAPI.
In addition to their function as routers between LAN and the Internet, all
models of the LANCOM Wireless DSL series operate also as base stations for
wireless networks. With the base station you link wireless PCs and notebooks
to a network, connect these devices to the existing wired LAN and enable also
the wireless devices to access the Internet.
1.1
How does ADSL work?
For LANCOM 1521
Wireless ADSL and
LANCOM 1821
Wireless ADSL only
Since the late 1980s, scientists have been working on the idea of using con-
ventional telephone lines for video and multimedia applications.
High speed via standard telephone lines
Their approach was based on the use of telephone lines only for the distance
between the subscriber and the next local exchange. From the switching
center, the data is then transferred via high-speed connections to the desired
destination or target network (i.e. the Internet). This minimization of the tel-
Internet
splitter
LANCOM Wireless DSL
telephone
phone line
DSL modem
WLAN
LAN
