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Title: No internet connection: ONT 'PON' is green but T-56 'Internet' light is OFF

  • February 12, 2026
  • 6 reacties
  • 90 Bekeken

Hello,

My fiber internet connection is down and I need assistance.

Current Status:

ONT (Fiber termination unit): Both 'Power' and 'PON' lights are steady GREEN.

Router (Zyxel T-56): Both 'INTERNET' and '2.5G WAN' lights are completely OFF.

Troubleshooting I have already performed:

Power-cycled both the ONT and the T-56 router (waited for 2 minutes).

Performed a factory reset on the T-56 router.

Checked all cable connections between the ONT and the router.

The issue persists even after the factory reset. Could a moderator please check the line status or the router configuration?

(Note: I have added my Customer Number to my community profile settings.)

Thank you in advance.

Beste antwoord door umi666

I received support via X's DM and had the ONT replaced.

Bekijk origineel

6 reacties

Waqqas
Super User
Forum|alt.badge.img+15
  • Odido Superuser
  • February 12, 2026

Hello ​@umi666 

Have you tried changing the cable between ONT and router?

Does the LAN LED on the ONT also remain off? Maybe the ONT isn't working anymore and needs to be replaced.


  • Auteur
  • is een nieuwe Poster
  • February 12, 2026

The LAN cable has been checked with a cable tester.
I'll post images of the ONT and modem. All LEDs are lit.

 


Waqqas
Super User
Forum|alt.badge.img+15
  • Odido Superuser
  • February 12, 2026

​@umi666 

Looks like the ONT is broken.


  • Auteur
  • is een nieuwe Poster
  • February 12, 2026

Could a moderator please check this? Since I’ve confirmed the cable is working and all basic troubleshooting is done, I need the internet to be back online as soon as possible. If the hardware is faulty, please arrange a replacement router or ONT, or send a technician. Thank you.


  • Auteur
  • is een nieuwe Poster
  • February 13, 2026

It seems I'll have no choice but to cancel the contract as things stand.


  • Auteur
  • is een nieuwe Poster
  • Antwoord
  • February 15, 2026

I received support via X's DM and had the ONT replaced.