Hi Kenny,
Thanks for your post, welcome to the Community Forums! We're sorry if the steps set out on the home phone switchover communications have not been entirely clear.
Once your area has been upgraded and your landline is ready to switch over - if you don't require an extension fitting, we'll just send out an adapter to you. All you need to do is plug you handset into the adapter, and the adapter into the TEL port of your hub.
If you do require an engineer visit, do let us know and we can get that arranged for you from here, via private message.
Thanks!
Beth