We moved into a new build over a month ago. The BT Openreach master socket was recently installed in a cupboard - as always seems to be the case with new builds. There are other phone sockets around the house that I guess are not really connected yet.
How do you connect those sockets to the master socket? There seem to be wires that are obviously meant for these sockets, I believe. Who normally connects these to the master socket? I mean, people don't have their phone in a cupboard, right?
We lived in a new build flat before, and we actually had our main phone IN THE CUPBOARD. 
Or are there other phones out there these days that have a "receiver" in the cupboard and phones scattered around the house?