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16  NTU Optical Network Terminals 
port is not registered or authorization is not completed on 
SIP server  
TV signal is not available  
signal level does not correspond to the normal (more than 
+2 dBm) 
The device is disconnected from the power source or 
faulty  
The current device configuration differs from the default 
one 
The default configuration is set 
2.6.3  Indication of LAN Interfaces 
Table 10 lists operation modes shown by LAN ports LEDs located on the rear panel of the device. 
Table 10 – Light Indication of LAN Interfaces 
Port is in 1000Base-T mode, no data 
transfer  
The port is in the 1000Base-T mode, 
data transfer 
Port is in 10/100Base-TX mode, no data 
transfer 
The port is in the 10/100Base-TX mode, 
data transfer 
2.7   Reboot/Reset to factory defaults 
For device reboot, press the Reset button once on the device side panel (“F” button on a rear panel for 
NTU-RG-1421GC-Wac). In order to reset the device to factory settings, press the Reset button (“F”) and hold it 
for 7-10 seconds until the POWER LED glows red. Factory settings for IP address are: LAN—192.168.1.1, subnet 
mask—255.255.255.0. Access can be provided from LAN 1, LAN 2, LAN 3 and LAN 4 ports. 
2.8   Delivery Package 
NTU-RG standard delivery package includes: 
–  NTU-RG optical network terminal; 
–  220V/12V power adapter; 
–  operation manual.