Quick Answers
| Problem | Common cause | Fix |
|---|---|---|
| WiFi connected but no internet | DHCP lease expired or DNS failure | Reboot router, then set DNS to 8.8.8.8 / 1.1.1.1 |
| No PON / optical light on ONT | Fiber line cut, loose connector, or OLT port fault | Reseat the green fiber cable gently, then call support |
| Internet light blinking fast | Line fault registered with the ISP | Wait 10 minutes, power cycle, then call 01-5970050 |
Step 1: Power cycle the router and ONT
- Switch off the router and the ONT unit.
- Wait 60 seconds.
- Switch both back on and wait 2 minutes for the PON and internet lights to sync.
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Step 2: Check the fiber connection
- Look at the back of the ONT for the green fiber cable.
- Push the connector in until it clicks.
- Check for sharp bends or cuts in the fiber near the window or wall.
Step 3: Log in to the router admin page
- Connect to the router WiFi.
- Open a browser and visit
192.168.1.1. - Use the admin password printed on the router sticker (default user is often
admin).
Step 4: Set a working DNS
- In the admin page go to Network > WAN > DNS.
- Set primary DNS
8.8.8.8and secondary1.1.1.1. - Save and reboot the router.
Step 5: Factory reset the router
- Press and hold the reset button at the back for 10 seconds until all lights blink.
- Wait for the router to reboot, then reconnect WiFi.
- Re-enter WiFi name and password from the sticker.
Step 6: Call WorldLink support
- If the PON light is still off after 15 minutes, call 01-5970050.
- Give them your customer ID (from your bill) and report the OLT port issue.
- Ask for a ticket number and expected resolution time.
Troubleshooting
| Problem | Cause | Fix |
|---|---|---|
| Only power light is on | ONT firmware crashed or hardware fault | Hold reset for 30 seconds; if no change, request ONT replacement |
| WiFi slow on all devices | Congestion or old firmware | Enable 5 GHz band, update firmware from admin page |
| Internet drops every few hours | WAN lease or port flapping | Change WAN DHCP lease to weekly or ask ISP to reset OLT port |
Related product check
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FAQ
Q: What does the red internet light on my WorldLink router mean?
A: The router is not receiving signal from the fiber line. Check the ONT PON light first; if PON is off, call support.
Q: How do I reset my WorldLink router?
A: Hold the reset button at the back for 10 seconds until all lights blink, then reconfigure via 192.168.1.1.
Q: Why is my WorldLink WiFi slow at night?
A: Peak-hour congestion. Try the 5 GHz band and restart the router before 8 PM.