
LANCOM 1811 Wireless DSL – LANCOM 1821+ Wireless ADSL
Chapter 9: Options and accessories
77
EN
these signals can be re-combined into a single signal. The most common
methods are space diversity and polarization diversity.
LANCOM Systems supplies a variety of polarization-diversity antennas as
accessories for LANCOM Wireless Router. These models enable two orthogo-
nally polarized signals to be received with a single antenna. Further informa-
tion about this technique is available in our "Polarization Diversity" techpaper.
Polarization diversity antennas from LANCOM Systems:
AirLancer Extender O-D80g (2.4 GHz band ), item no. 61221
AirLancer Extender O-D60a (5 GHz band ), item no. 61222
9.1.2
Installation of AirLancer Extender antennas
For installation of an optional AirLancer antenna turn off the LANCOM
Wireless Router by pulling out the power supply cable of the device. Remove
now carefully the two diversity antennas on the back by screwing them out.
Connect the AirLancer antennas to the antenna connector with the inscription
’Antenna Main’.
9.2
LANCOM Public Spot Option
Wireless public spots are publicly accessible points, at which users with their
own mobile computers can dial wirelessly into a network, usually into the
Internet.
The Wireless LAN technology is ideally suitable to offer wireless Internet ser-
vices to the public at places such as airports, hotels, stations, restaurants or
cafés, so-called Public Hot Spots. The LANCOM Public Spot Option is intended
for operators of public wireless networks, and unveils additional functions for
authentication and billing of public Internet services for the LANCOM Router
base station, thus enabling a simple set-up and maintenance of public hot
spots.
The authentication and billing of the individual users is realized via user-fri-
endly web sites, so that client PCs with a Wi-Fi certificated radio card (e.g.
AirLancer) and a standard Internet browser can directly go online.
Reset
DC12V
ADSL(2+)
Config
USB
(COM)
Aux
Main
ETH 3
ETH 4
ETH 2
ETH 1
ISDN S
0
’Antenna Main’ connector for AirLancer antenna