Zoom 4412A - Manual (Page 23)

Chapter 2: Setting Security 23
WPA
Select WPA if you are linking to a corporate network that uses a
RADIUS (Remote Authentication Dial-In User Service) server
that does not support WPA2.
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In the Security Configuration window, click the Encryption
Mode
drop-down arrow and select WPA.
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In the IEEE 802.1X Authentication area, note that the
check box marked Enable IEEE 802.1X authentication for
this network
is selected. With IEEE 802.1X authentication,
each wireless device (client) sends a signal to the wireless
access point, which in turn sends the signal to the RADIUS
server. The server determines whether or not the client is
allowed to join the network.