FTTP doesn't connect to the master socket. It's fibre. It doesn't use your internal phone cabling.
http://bt.custhelp.com/app/answers/...is-bt-infinity-'fibre-to-the-home'-installed?
http://tom.goskar.com/2013/09/20/my-fibre-to-the-premises-fttp-installation-part-1/
Ok according to that they do the work outside first. Where it says 'This stage involves connecting a fibre cable to a small box that we'll fix to your outside wall, close to where your phone line enters your home. ' is there a reason why it is near the current phone socket? I would prefer it to be in a different room.