Intermec WA21 System Manual page 96

Chapter 4 — Configuring the Radios
82
802.11g Radio Advanced Parameter Descriptions (continued)
Parameter Description
Fragmentation Specifies the largest data frame that can be transmitted without
Threshold fragmentation. Range is 256 to 1600.
On certain radios, the fragmentation does not occur unless the
radio detects interference. Larger frame sizes can improve
throughput on a reliable connection. Smaller frame sizes can
improve throughput on a poor connection.
Antenna control* Specifies whether the radio uses two antennas or one antenna to
receive information. If you choose Two Antennas, the radio
selects the antenna that has best reception.
Mixed Mode Optimizes the frame burst window length to optimize
Performance* performance for specific clients. Gives more time to higher rate
frames to maximize throughput in the presence of low rate
clients.
Optimized for 802.11g clients: 802.11g transmissions are
maximized.
Optimized for 802.11g clients: 802.11b transmissions are
maximized.
Optimize Mixed (802.11b and 802.11g): Allows an optimal
mix of 802.11g and 802.11b transmissions.
Enable Data Rate Determines if you want the radio to drop to a slower data rate
Fallback when it has trouble communicating with another radio.
Intermec recommends that you leave this check box checked or
you may affect radio network performance. Clearing this check
box is only used when performing site surveys.
Disallow SSID Determines if end devices that have their SSID set to ANY or are
(Network Name) of left blank (empty) can associate with this radio.
'ANY'
Clear this check box to allow these end devices to associate with
(Master radio only)
this radio. Although this setting is 802.11 compliant, it is not
very secure.
Check this check box to prevent end devices with an SSID of
ANY or are left blank from associating with this radio.
DTIM Period Specifies the number of beacon periods to skip before including
a DTIM (delivery traffic indication message) in a beacon frame.
(Master radio only)
Range is 1 to 65535.
Setting a higher DTIM period may conserve battery life in an
end device, but it may increase response time.
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