Cerio OW-200N2 User Manual page 143

Fragmentation will be triggered by setting the Fragment Threshold, usually in
Byte-length. Only when the frame size is over the Threshold, fragmentation will
take place automatically.
5.7.1.4 RTS Threshold : RTS Threshold is in the range of 1~2347 byte. The
default is 2347 byte.
The main purpose of enabling RTS by changing RTS threshold is to reduce
possible collisions due to hidden wireless clients. RTS in AP will be enabled
automatically if the packet size is larger than the Threshold value. By default,
RTS is disabled in a normal environment supports non-jumbo frames.
5.7.1.5 Short Preamble : By default, it's "Auto". To Disable is to use Long 128-bit
Preamble Synchronization field.
The preamble is used to signal "here is a train of data coming" to the receiver.
The short preamble provides 72-bit Synchronization field to improve WLAN
transmission efficiency with less overhead.
5.7.1.6 Tx Burst : By default, it's "Enable". To Disable is to deactivate Tx Burst.
With TX burst enabled, AP will send many packets in a burst, without collision
detection and RTS/CTS for each packet. TX Burst have better throughput but
cause interference with other APs in channel.
5.7.2 WMM : By default, it's "Disable". Select Enable, the packets with QoS WMM will have
higher priority.
5.7.3 Security Type : Select an appropriate security type for association, the Security Type
can be selected in "NONE", "OPEN", "SHARED", "WPA-PSK", or "WPA2-PSK" from
drop-down list; the type needs to be the same as that associated access point.
5.7.3.1 OPEN / SHARED : OPEN and SHARED require the user to set a WEP key
to exchange data.
Key Index : key index is used to designate the WEP key during data
500mW eXtreme Power 11Na Outdoor Bridge
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User's Manual