User Manual
188 
Contention 
Slot 
Select “Short” or “Long” – this value is used for contention 
windows in WMM. 
Preamble 
Type 
Set the wireless radio preamble type. The preamble type in 
802.11 based wireless communications defines the length of the 
CRC (Cyclic Redundancy Check) block for communication 
between the AP and roaming wireless adapters. The default 
value is “Short Preamble”. 
Guard 
Interval 
Set the guard interval. A shorter interval can improve 
performance. 
802.11g 
Protection 
Enable/disable 802.11g protection, which increases reliability but 
reduces bandwidth (clients will send Request to Send (RTS) to 
AP, and AP will broadcast Clear to Send (CTS), before a packet is 
sent from client). 
802.11n 
Protection 
Enable/disable 802.11n protection, which increases reliability 
but reduces bandwidth (clients will send Request to Send (RTS) 
to AP, and AP will broadcast Clear to Send (CTS), before a packet 
is sent from client). 
DTIM 
Period 
Set the DTIM (delivery traffic indication message) period value of 
the wireless radio. The default value is 1. 
RTS 
Threshold 
Set the RTS threshold of the wireless radio. The default value is 
2347. 
Fragment 
Threshold 
Set the fragment threshold of the wireless radio. The default 
value is 2346. 
Multicast 
Rate 
Set the transfer rate for multicast packets or use the “Auto” 
setting. The range of the transfer rate is between 1Mbps to 
54Mbps 
Tx Power 
Set the power output of the wireless radio. You may not require 
100% output power. Setting a lower power output may enhance 
security since access to your signal can be potentially prevented 
from malicious/unknown users in distant areas. 
Beacon 
Interval 
Set the beacon interval of the wireless radio. The default value is 
100. 
Station 
idle 
timeout 
Set the interval for the AP to send keepalive messages to a 
wireless client to check if the station is still alive / active. 










