Lancom 850 UMTS Manual page 34

LANCOM 3850 UMTS
Chapter 3: Basic configuration

Open or closed Wireless LAN?
Mobile radio stations dial-in the wanted Wireless LAN by declaration of the
network name. The specification of the network name is facilitated by two
technologies:
The Wireless LAN can be „closed" to prevent this procedure. In this case, no
enrolment with the network name 'ANY' will be accepted.

Selection of a radio channel
The base station operates in a certain radio channel. The radio channel will be
selected from a list of up to 11 channels in the 2.4 GHz frequency range or
up to 19 channels in the 5 GHz frequency range. (in various countries some
radio channels are restricted, see appendix).
The used channel and frequency range define the operating of the common
radio standard, in doing so the 5 GHz frequency range correspond to the IEEE
802.11a/h standard and the 2.4 GHz frequency range to the IEEE 802.11g and
IEEE 802.11b standard.
If no further base stations operate in reach of the base station, any radio
channel can be adjusted. Otherwise, the channels in the 2.4 GHz band must
be chosen in the way that they preferably do not overlap one another or have
a distance as great as possible respectively. The automatic setting is normally
enough in the 5 GHz band, in which the LANCOM Router base station itself
adjust the best channel via TPC (Transmission Power Control) and DSF (Dyna-
mic Frequency Selection).
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As standard, WEP128 encryption is activated for every unconfigured
device as standard. Further information can be found in the LCOS
reference manual under "Standard WEP encryption".
Mobile radio stations can search for Wireless LANs in the environs
(„scan") and offer for selection the found Wireless LANs in a list.
By using the network name 'ANY', the mobile radio station will enrol in
the next available Wireless LAN.
For standard, LANCOM base stations are responsive under the net-
work name 'LANCOM'. The wireless basic configuration of a base sta-
tion takes therefore place via this network name. If another network
name is set during the basic configuration, also the Wireless LAN
access of the configuring mobile base station must be changed to this
new network name after closing the basic configuration.