Here’s a detailed write-up for the (often bundled as the Sky Broadband Hub or Orange Livebox 5 depending on the region).

If you obtained your router from TalkTalk, for example, the firmware on that device is a customized build. It isn’t a "vanilla" Sagemcom build. It includes TalkTalk branding, pre-set configuration profiles, and remote management tools that allow the ISP to troubleshoot your line remotely.