OvisLink Corp. GDUO Manual Do Utilizador

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6.  Client + AP Mode 
 
 
AirLive G.DUO User’s Manual 
62
the ACKtimeout manually.
 
 
„  Preamble Type: A preamble is a signal used in wireless environment to synchronize 
the transmitting timing including Synchronization and Start frame delimiter. In a "noisy" 
network environment, the Preamble Type should be set to Long Preamble. The Short 
Preamble is intended for applications where minimum overhead and maximum 
performance is desired. If in a "noisy" network environment, the performance will be 
decreased. 
 
„  IAPP:    IAPP (Inter Access Point Protocol) is designed for the enforcement of unique 
association throughout a ESS (Extended Service Set) and a secure exchange of 
station’s security context between current access point (AP) and new AP during 
handoff period. 
 
 
„  BG Protection:   
The 802.11g standard includes a protection mechanism to ensure mixed 802.11b 
and 802.11g operation. If there is no such kind of mechanism exists, the two kinds of standards may 
mutually interfere and decrease network’s performance.
. 
 
 
„  Hide SSID:    Enable Hide SSID will make the AP network’s SSID invisible.    A device 
can link with the AP only if correct SSID name is entered. 
 
 
„  Isolation:    Enable Isolation will prevent wireless clients to see each other on the 
network. 
 
 
„  TX Power Level:    You can set your TX Output power level here.    Please note the 
maximum allowable TX output power in EU is 20dBm.    Please do not exceed your 
country’s legal limit. 
 
 
6.3.4 Access Control 
Operation Mode -> Setup -> Access Control 
The G.DUO allows you to define a list of MAC addresses that are allowed or denied to 
access the wireless network.    This function is available only for Access Point and Gateway 
modes.