What do light mean on my ONT (box on the wall)

If none of your devices can connect to the Internet, check the lights on the box on the wall, know as the ONT

 

IMPORANT: If you have an issue. Make sure all cable are secure/snug and haven't come loose. Power down for 15mins then power back on and wait 3mins for the lights to settle 


Power: Must be a solid green at all times

  • Power connector has come loose.
  • Problem with the plug socket. Plug a lamp into the same plug socket and see if it turns on.
  • A house/room fuse tripped
  • Faulty unit that needs replacing

Optical: This should be a solid green at all times (If the power light is off, this will also be OFF)

  • Loose connector
  • If just turned on wait three minutes to see if the light comes on.
  • Outside fault that requires an engineer

Alarm: This should be a OFF at all times

  • If just turned on wait three minutes to see if it goes OFF
  • Fault that requires Customer Services

2.5GE: This should either be on or flashing green

  • Flashes green when the Internet is in use.
  • Solid green when the Internet is online but not in use.
  • If OFF: the Ethernet cable may not be connected correct between the ONT and Router
  • If OFF: Ethernet Cable could be fault, try changing the cable
  • If OFF: Could be and issue with the Router
  • If OFF: Could be an issue with the ONT