There are two sorts of Fibre65.
Fibre to the cabinet is simply that, then copper to your home. You'd still be able to use the landline as normal. There will be an Openreach traditional master socket somewhere, probably in the front wall of the house.
Full Fibre to the premises also offers Fibre65 - this is a minimum package and will either come with copper "leave behind" for using the landline in the traditional way or you would plug the phone in at the back of your router (Sagemcom Hub2).
If the copper line is completely gone you will no longer be using the master socket at all, @bolly1holly.
And what does it say in My Account, in your billing detail, or in your most recent contract information, which should show in an email from when you set this contract up?
Gliwmaeden2, a fellow customer.
