Before diving into the manual details, it is critical to understand what this device is—and what it is not . The is an Optical Network Terminal (ONT). In a fiber optic internet setup, the ONT is the bridge between the fiber optic cable coming from the street and your home network (Ethernet).
Many ISPs now hard-code custom passwords for security. Check the sticker on the bottom of your router; if it lists an "Admin Password" or "Web Password," use that. If the sticker only shows the Wi-Fi password, you may need to contact your ISP for the admin credentials, as they often restrict user access to the advanced settings. nokia g240ge manual