____________________________________________________________________________________ 
____________________________________________________________________________________ 
60  NTU Optical Network Terminals 
–  802.11n Protection—when enabled, enhances the security, but decreases the bandwidth; 
–  Support 802.11n Client Only – when enabled, denies 802.11b/g clients to access the device; 
–  RIFS  Advertisement—Reduced  Interframe  Space,  reduces  the  interval  between  data  units  (PDUs), 
increases Wi-Fi efficiency; 
–  RX Chain Power Save – disables one of the device's antennas to save energy; 
–  RX  Chain  Power  Save  Quiet Time—time  period  when  the  traffic  intensity  should  be  less  than  the  PPS 
value to activate the power saving function; 
–  RX Chain Power Save PPS—upper limit of the PPS parameter (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 activated. 
–  54g™ Rate—set the transfer rate in 54g™ compatibility mode; 
–  Multicast Rate—set the transfer rate for multicast traffic; 
–  Basic Rate—basic transfer rate; 
–  Fragmentation Threshold—set the fragmentation threshold, in bytes. If a packet size exceeds the value, 
the packet is fragmented into parts of the corresponding size; 
–  RTS  Threshold—if  the  packet  is  smaller  than  the  RTS  threshold  value,  the  RTS/CTS  mechanism  (with 
request to send/clear to send packets) is not used; 
–  DTIM  Interval—time  period  after  which  the  broadcast  and  multicast  packets  in  the  buffer  will  be 
delivered to wireless clients; 
–  Beacon Interval—time  period  for  transmission of  informational  packets,  which  indicate  activity  of  the 
access point, to the wireless network; 
–  Global Max Clients—maximum possible number of wireless clients; 
–  XPress™  Technology—provides  an  increase  in  throughput  in  802.11g  networks  up  to  27 %.  XPress™ 
Technology can increase the throughput up to 75 % in mixed networks (802.11g and 802.11b). 
–  Transmit Power—define the signal power of the access point; 
–  Transmit Power Boost —high signal power of the access point; It is not recommended to use. 
–  WMM (Wi-Fi Multimedia)—enables the Wi-Fi Multimedia (WMM) mode. The mode allows the 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  does  not  acknowledge  the 
received packets. This increases transmission efficiency of low-interference medium, however decreases 
the efficiency of high-interference one; 
–  WMM APSD—set automatic transition into the power saving mode (if enabled, automatic transition is 
allowed); 
–  Enable Traffic Scheduler – use client indicators to balance broadcast usage by directions; 
–  Airtime Fairness (ATF) – function for reducing the negative impact of a slow devices to bandwidth of a 
wireless network.  
Click the Apply/Save button to accept and save the changes. 
4.5  Storage Service menu
1
. File Storage Service 
4.5.1  Storage Device Info submenu. Connected USB Device Info 
Use  the  menu  to  view  the  list  with  all  connected  data  storage  devices.  The  following  information  is 
provided:  
 
 
1
   Only for NTU-2W, NTU-RG-1402G-W