Just connecting the wires up in the right order isn't going to get you a working BT telephone line. Someone will need to reconnect the DP out in the street and make some changes in the telephone exchange. If you want to go back to BT then you'll have to pay what ever they demand.
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Do you know that we're all in line for succession to the throne? Really?
Well, if forty-eight million, two hundred thousand, seven hundred and one people died I'd be Queen.