Allied Telesis AT-WA7400 - Manual (Page 59)

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Appendix B
Radio Bands
Allied Telesyn’s AT-WA7400 Wireless Access Point is capable of
operating in the 2.4GHZ (IEEE 802.11g/b) AND in the 5GHZ band
(IEEE 802.11a) simultaneously. The access point is shipped with
the 802.11g/b radio enabled and is software upgradeable to
operate in 802.11g/b and 802.11a. For further information about
this upgrade, please contact your Allied Telesyn sales
representative.
Some of the advantages of the 802.11a option are:
ˆ Higher performance. 802.11a can deliver data rates up to
54Mbps and there is enough room in the 5GHz spectrum to
support up to 12 access points operating in the same area
without causing interference between access points. This
equates to 432Mbps (12 X 54Mbps) total data rate
performance. With 802.11g, you have three non-overlapping
channels for setting access point frequencies, which can limit
capacity.
ˆ Less RF interference: The growing use of 2.4GHz cordless
phones and Bluetooth devices is crowding the radio spectrum
within many facilities. This significantly decreases the
performance of 802.11g wireless LANs. The use of 802.11a
operating in the relatively un-crowded 5GHz band avoids this
interference.
ˆ Ability to use the Wireless Distribution System (WDS) feature
utilizing the 802.11a radio for bridging to another access point
while servicing 802.11g customers without using user
bandwidth for the bridging function.