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46  NTU Optical Network Terminals 
–  Full—automatic  selection  mechanism  scans  and  selects  a  channel  from  the  list  of  available 
channels. 
–  Legacy—automatic  selection  mechanism  scans  and  selects  a  channel  from  the  list  of  channels 
supported by legacy devices (only for 2.4GHz band). 
–  Custom—automatic  selection  mechanism  scans  and  selects  a  channel  from  the  list  of  channels 
defined by the user in Allowed Channel settings. 
–  802.11n/EWC—compatibility  mode  for  802.11n  Draft2.0  and  EWC  (Enhanced  Wireless  Consortium) 
equipment. 
–  Bandwidth—define the channel width to 20MHzor 40MHz. In 40MHz mode, two adjacent 20MHz bands 
are used to increase the channel bandwidth. 
–  Control Sideband—select the second channel (Lower or Upper) in 40MHz mode. 
–  802.11n Rate—define connection rate. 
–  802.11n Protection—when enabled, security will be enhanced at the cost of the bandwidth. 
–  RIFS Advertisement—Reduced Interframe Space, reduces interval between data units (PDUs), increases 
Wi-Fi efficiency. 
–  OBSS Co-Existence—tolerance setting for the chosen mode (20MHz or 40MHz). When set to Enabled, the 
optimal  device operation  mode  will  be  selected  with  regard  to  the  Bandwidth  parameter,  otherwise 
operation mode will depend only on Bandwidth parameter value. 
–  RX  Chain  Power Save Quiet  Time—time  period during which  the  traffic must  be below  the  PPS value 
before the power saving feature will be activated. 
–  RX Chain Power Save  PPS—the upper limit of  PPS (packet per second). If the packets intensity of  the 
WLAN interface does not exceed this value during the time specified in RX Chain Power Save Quiet Time, 
the power saving mode is turned on. 
–  54g™ Rate—set the transfer rate in compatibility mode for 54g™ devices. 
–  Multicast Rate—set the transfer rate for multicast traffic. 
–  Basic Rate—basic transfer rate. 
–  Fragmentation  Threshold—set  the  fragmentation  threshold  in  bytes.  If  the  packet  size  exceeds  the 
specified value, the packet will be fragmented into parts of a suitable size. 
–  RTS Threshold—if the packet size is smaller than RTS threshold value, RTS/CTS mechanism (with request 
to send/clear to send packets) won't be used. 
–  DTIM Interval—time period, upon the expiration of which, broadcast and multicast packets placed in the 
buffer will be delivered to wireless clients. 
–  Beacon Interval—time period used for transmission of informational packets, that indicate the activity of 
the access point, to the wireless network. 
–  Max Clients—the maximum number of wireless clients. 
–  XPress™ Technology—enables bandwidth boost up to 27% in 802.11g networks. In mixed 802.11g and 
802.11b networks, XPress™ Technology can boost the bandwidth up to 75%. 
–  Transmitter Power—define the access point signal power. 
–  WMM (Wi-Fi Multimedia)—set Wi-Fi Multimedia (WMM) mode. This mode enables fast and high quality 
transmission of audio and video content simultaneously with data transmission. 
–  WMM No Acknowledgement—when this mode is used, the receiving side won't acknowledge received 
packets. In a low interference environment, it allows to increase the efficiency of transmission; in a high 
interference environment, efficiency of transmission will decrease. 
–  WMM APSD—enables automatic switching to the power saving mode. 
–  Beamforming  Transmission  (BFR)—beamforming  feature  allows  to  mitigate  the  wireless  signal 
interference and enhance the quality of Wi-Fi connection. 
–  Beamforming  Reception  (BFE)—beamforming  feature  that  allows  to  enhance  the  quality  of  Wi-Fi 
connection. 
Click the Apply/Save button to accept and save the changes.