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E Copyright Nokia Networks Oy
C33902002SE_00
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the access list. This can be done manually through the local command
line interface (CLI) or with a Web browser management.
4.11 Wireless LAN and radio interface
MW1122 supports wireless LAN to be used as one of the interfaces.
The wireless LAN utilises Nokia C110/C111 Wireless LAN PC card
which needs to be inserted to the designated PC Card slot on the back
panel of the modem. Only Nokia C110 or C111 Wireless LAN cards
can be used. Without a wireless LAN card, MW1122 operates as a
normal ADSL terminal with one 10Base-T Ethernet interface. The
wireless LAN card can be inserted to the PC Card slot while the
modem is operating and the wireless LAN connectivity will be
achieved without restarting the modem. Only the WLAN subsytem
must be reseted through the web interface or the command line
interface.
Wireless LAN used in MW1122 is based on IEEE802.11 standard
operating at 2.4 GHz radio band. The band has been divided into
subchannels which are dependent on local regulations. Typically, in
Europe, there are 13 and, in USA, 11 channels. The transmission
power is limited to 100 mW/MHz giving typical indoor coverage of 20
to 50 metres.
4.12 Wired Encryption Privacy (WEP)
MW1122 supports full-speed WEP encryption and both
authentication methods defined in IEEE 802.11b: Open-key and
shared-key authentication. The encryption is 40-bit RC4 WEP
encryption. Additionally, MW1122 supports 128-bit RC4 WEP
encryption.
4.13 Weighted Fair Queueing (Class of Service)
As a Class of Service (CoS) function, MW1122 supports Weighted
Fair Queueing (WFQ) for each ATM VCC. The CoS function ensures
that different IP traffic flows are treated fairly in the upstream (towards
the Internet) direction. This may be necessary, in some cases, because
the upstream capacity of the ADSL line is somewhat limited compared
to the Ethernet bandwidth on the office or home LAN. The WFQ CoS
function classifies IP traffic flows based on IP address, protocol and
port fields. It is capable of identifying the IP flow from all supported