The most reliable source is your internet service provider’s support portal. If they don’t provide one, you can find the official Nokia ONT documentation at:
: Toggle the power button to "ON" (recessed state) to initialize the device. Management and Maintenance Nokia ONT G-240G-A Quick Reference Guide nokia g240ge manual
Using these URLs on an ISP-locked device may void your support. Use at your own risk. The most reliable source is your internet service
Installation is usually handled by your ISP, but knowing the basics can save you a service call. The User Guide on Manuals.plus outlines a few critical safety and installation steps: nokia g240ge manual