Edimax EW-7479CAP, User Manual

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IV-3-1-2. Advanced
These settings are for experienced users only.
Please do not change any of the values on this
page unless you are already familiar with these functions.
Changing these settings can adversely affect the performance of
your access point.
Contention Slot Select “Short” or “Long” – this value is used for
contention windows in WMM (see
IV-3-6.
WMM ).
Preamble Type Set the wireless radio preamble type. The
preamble type in 802.11 based wireless
communication defines the length of the CRC
(Cyclic Redundancy Check) block for
communication between the access point and
roaming wireless adapters. The default value is
“Short Preamble”.
Guard Interval Set the guard interval. A shorter interval can
improve performance.