ok - so thats also a phone box and not what you want need - maybe the cable for BB has been removed - worth following the wires from that box outside - it should go to an external box see if there is a thicker coax cable - if there is follow that if it goes inside
if all that is fruitless then you need a tech - try this
pre-installation and delivery team on 0800 052 1734
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Tony.
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