Nokia MW1122, T66520 user manual Wireless LAN and radio interface, Wired Encryption Privacy WEP

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

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