You are getting too technical there. Possibly caused by the "shorthand" way we refer to xDSL modem/routers as simply "routers".
BT Openreach fibre carries on into the inside of the premises where it ends up in a wall-mounted ONT (Optical Network Terminator). You can think of that as the replacement for an xDSL modem. The current ones then output via a single ethernet socket using standard ethernet cables of suitable speed capability to go to your true router+switch+WAP that we also shortcut-call a router.
My broadband basic info/help site - www.robertos.me.uk.
Domains, sites and mail hosting - Tsohost
Connections: OnePlus 8 Pro max 165Mbps down, 24Mbps up on Three, and B311 4G, tbb tests normally 35-45Mpbs down, 65Mbps off-peak, 9-24 up.
Experience shows us that love does not consist in gazing at each other but in looking together in the same direction.
Antoine de Saint-Exupéry.
Edited by RobertoS (Mon 09-Nov-20 18:20:13)