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Transmit Rate: Use the drop-down menu to select a specific transmit rate for the AP-600a. Choose between 6, 9,
12, 18, 24, 36, 48, 54 Mbits/s, and Auto Fallback for standard 802.11a mode. If Turbo mode is enabled, choose
between 12, 18, 24, 36, 48, 72, 98, 108 Mbits/s, and Auto Fallback. Auto Fallback is the default setting; it allows
the AP-600a unit to select the best transmit rate based on the cell size.
•
DTIM Period: The Deferred Traffic Indicator Map (DTIM) is used with clients that have power management
enabled. DTIM should be left at 1, the default value, if any clients have power management enabled. This
parameter supports a range between 1 and 65535.
•
RTS/CTS Medium Reservation: This parameter affects message flow control and should not be changed under
normal circumstances. Range is 0 to 2347. When set to a value between 0 and 2347, the Access Point uses the
RTS/CTS mechanism for packets that are the specified size or greater. When set to 2347 (the default setting),
RTS/CTS is disabled. See
Figure 4-5
Wireless Interface Configuration Screen (AP-600a)
Dynamic Frequency Selection (DFS)
AP-600a units sold in Europe use a technique called Dynamic Frequency Selection (DFS) to automatically select an
operating channel. During boot-up, the AP-600a scans the available frequency and selects a channel that is free of
interference. If the AP-600a subsequently detects interference on its channel, it automatically reboots and selects
another channel that is free of interference.
DFS only applies to AP-600a devices used in Europe (i.e., units whose regulatory domain is set to ETSI). The
European Telecommunications Standard Institute (ETSI) requires that 802.11a devices use DFS to prevent
interference with radar systems and other devices that already occupy the 5 GHz band.
If you are using an AP-600a in Europe, keep in mind the following:
•
DFS is not a configurable parameter. It is always enabled and cannot be disabled.
•
You cannot manually select the device's operating channel; you must let DFS select the channel.
•
You cannot configure the Auto Channel Select option. Within the HTTP interface, this option always appears
enabled.
RTS/CTS Medium Reservation
Advanced Configuration
for more information.
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