User's Manual Part 1

December 20, 2004 SCP-LPS20x-011-012-01H
ADC Telecommunications, Inc. 63
Broadcast WLAN name (SSID)
When this option is enabled, the LPS-20x will broadcast its wireless network name (SSID) to all client stations. Most
wireless adapter cards have a setting that enables them to automatically discover access points that broadcast their
names and automatically connect to the one with the strongest signal. If you disable this option, client stations will
have to specify the network name you enter for WLAN name when they connect.
Permit traffic exchange between wireless client stations
Enable this option to allow wireless client stations to exchange data with one another. By default, the LPS-20x
blocks all traffic between wireless client stations.
RADIO PARAMETERS
Wireless Mode
The transmission speed and frequency band is 802.11b: 11 Mbps in the 2.4 GHz frequency band.
Operating Frequency
Select the correct frequency for the LPS-20x to operate in. The frequencies that are available are determined by the
radio installed in the LPS-20x and the regulations that apply in your country.
For optimum performance when operating in 802.11b mode, choose a frequency that differs from other wireless
access points operating in neighboring cells by at least 25 MHz. Consult the Wireless > Neighborhood page to
view a list of access points currently operating in your area.
Distance Between Access Points
Use this parameter to adjust the receiver sensitivity of the LPS-20x. This parameter should only be changed if:
• you have more than one wireless access point installed in your location
• you are experiencing throughput problems
In all other cases, use the default setting of Large. If you have installed multiple LPS-20xs, reducing the receiver
sensitivity of the LPS-20x from its maximum level will help to reduce the amount of crosstalk between the wireless
stations to better support roaming clients. By reducing the receiver sensitivity, client stations will be more likely to
connect with the nearest access point.
RTS Threshold
Use this parameter to control collisions on the link that can reduce throughput. If the Status -> Wireless page
shows increasing values for Tx multiple retry frames or Tx single retry frames, you should adjust this value until
the errors clear up. Start with the largest value and slowly decrease until errors are minimized. Note that using a
small value for RTS threshold can affect throughput.
If a packet is larger than the threshold, the LPS-20x will hold it and issue a request to send (RTS) message to the
client station. Only when the client station replies with a clear to send (CTS) message will the LPS-20x send the
packet. Packets smaller than the threshold are transmitted without this handshake.
Transmit Power
Use this parameter to set the transmission power of the wireless radio.
• HIGH: Sets the maximum transmission power the wireless card is capable of. It will be either 100 mW (20
dBm) or 200 mW for North America (23 dBm).
• MEDIUM: 17 dBm
• LOW: 13 dBm