____________________________________________________________________________________ 
 
____________________________________________________________________________________ 
                       NTU Optical Network Terminals      3 
  CONTENTS   
1 INTRODUCTION ...................................................................................................................................................... 5 
2 PRODUCT DESCRIPTION ......................................................................................................................................... 6 
2.1 Purpose ........................................................................................................................................................... 6 
2.2 Models ............................................................................................................................................................. 7 
2.3 Device Specification ........................................................................................................................................ 7 
2.4 Main Specifications ....................................................................................................................................... 10 
2.5 Design ............................................................................................................................................................ 12 
2.5.1 NTU-RG-1421G-Wac/NTU-RG-1421G-WZ/NTU-RG-1431G-Wac ......................................................... 12 
2.5.2 NTU-RG-1421GC-Wac .......................................................................................................................... 13 
2.6 LED Indication ................................................................................................................................................ 14 
2.6.1 NTU-RG-1421G-Wac, NTU-RG-1421G-WZ, NTU-RG-1431G-Wac ........................................................ 14 
2.6.2 NTU-RG-1421GС-Wac .......................................................................................................................... 15 
2.6.3 Indication of LAN Interfaces ................................................................................................................. 16 
2.7 Reboot/Reset to factory defaults ................................................................................................................. 16 
2.8 Delivery Package ........................................................................................................................................... 16 
3 ARCHITECTURE OF DEVICES ................................................................................................................................. 17 
3.1 NTU-RG architecture ..................................................................................................................................... 17 
4 CONFIGURATION OF NTU-RG-1421G-WAC, NTU-RG-1421G-WZ, NTU-RG-1431G-W AND NTU-RG-1421GC-W 
VIA WEB INTERFACE. USER ACCESS ......................................................................................................................... 19 
4.1 The “Device Info” menu ................................................................................................................................ 20 
4.1.1 The “Summary” submenu .................................................................................................................... 20 
4.1.2 The “WAN” submenu. The Status of Services ...................................................................................... 20 
4.1.2.1 The “General” submenu. General information............................................................................ 20 
4.1.2.2 The “Detail” submenu. Detailed Information .............................................................................. 21 
4.1.3 The “LAN” submenu. Monitoring of LAN Ports. Monitoring of Wi-Fi Interface Status ....................... 21 
4.1.4 The “Statistics” submenu. Traffic flow information for device ports .................................................. 21 
4.1.5 The “Route” submenu. Routing table preview .................................................................................... 22 
4.1.6 The “ARP” submenu. Display of the ARP Protocol Cache .................................................................... 23 
4.1.7 The “DHCP” submenu. Active DHCP leases .......................................................................................... 23 
4.1.8 The “Wireless Stations” submenu. Connected wireless devices ......................................................... 24 
4.1.9 The “Wireless Monitor” submenu. Discovered Wi-Fi networks .......................................................... 24 
4.1.10 The “Voice” submenu. Monitoring of telephone ports ..................................................................... 25 
4.2 The “Advanced Setup” menu. Advanced configuration................................................................................ 25 
4.2.1 The “LAN” submenu. Configuration of Main Parameters .................................................................... 25 
4.2.2 The “NAT” submenu. NAT Settings ...................................................................................................... 26 
4.2.2.1 The “Virtual Servers” submenu. Virtual server settings .............................................................. 26 
4.2.2.2 The “Port Triggering” submenu. Port Triggering Settings ............................................................ 27 
4.2.2.3 The “DMZ Host” submenu. Demilitarized Zone Settings ............................................................. 29 
4.2.3 The “Security” submenu. Security Settings .......................................................................................... 29 
4.2.3.1 The “IP Filtering” submenu. Address Filtering Settings ............................................................... 29 
4.2.3.2 The “MAC Filtering Setup” submenu. Filtering Settings for MAC Addresses .............................. 31 
4.2.4 The “Parental Control” submenu: restriction settings ......................................................................... 32 
4.2.4.1 The “Time Restriction” submenu. Session Time Restriction Settings .......................................... 32 
4.2.4.2 The “Url Filter” submenu. Internet Access Restriction Settings .................................................. 33 
4.2.5 The “Dynamic DNS” submenu. Dynamic DNS Configuration ............................................................... 34 
4.2.6 The “Print Server” submenu. Print Server Configuration .................................................................... 37 
4.2.7 The “DLNA” submenu. DLNA server configuration .............................................................................. 37 
4.2.8 The “Z-Wave” menu ............................................................................................................................. 38 
4.2.9 The “UPnP” submenu. Autoconfiguration of network devices ............................................................ 38 
4.3 The “Wireless” menu. Wireless network configuration................................................................................ 39 
4.3.1 The “Basic” submenu. General settings ............................................................................................... 39