apparently on modern master sockets you can wire up the a&b coming in and they have a customer facing a&b from which you can extend the primary connection from for data to another (sub) master socket.
am gonna bin off the existing setup entirely, wire in a master socket where the cable comes into the property, then I've bought 30m more outdoor bt cable to go back out and then I'll run it round the front of the house and under the floorboards to the understairs cupboard like I wanted. later on I can cut out the first master socket and splice the cable coming in and the new extension in a junction box if i need to.
apparently on modern master sockets you can wire up the a&b coming in and they have a customer facing a&b from which you can extend the primary connection from for data to another (sub) master socket.
am gonna bin off the existing setup entirely, wire in a master socket where the cable comes into the property, then I've bought 30m more outdoor bt cable to go back out and then I'll run it round the front of the house and under the floorboards to the understairs cupboard like I wanted. later on I can cut out the first master socket and splice the cable coming in and the new extension in a junction box if i need to.