The "MODEM/ONU file" that NT Thailand requests is typically a screenshot or photo of your modem/ONU (Optical Network Unit) status page, showing:
1. Device Model & Serial Number (SN/MAC)
2. Current Connection Status (Upstream/Downstream Rate)
3. Sometimes, PON signal strength (dBm)
They want this to verify which hardware you are using and the connection details before approving an upgrade.
How to get it:
1. Connect to your router/modem via browser:
Open browser, go to common IPs like:
192.168.1.1
192.168.0.1
192.168.1.254
2. Login to modem interface:
Default username/password is often admin/admin or found on a sticker on the device.
3. Find the Status/Device Info page:
Look for sections like "Device Info", "WAN Status", "PON Info".
4. Screenshot or take a photo.