Hi, the exchange our phone is actually connected to was upgraded to Infinity a while ago - its the Locks Heath exchange (STLOCKH), but our street/area does not have Infinity yet (as far as I know).
I cannot use the BT line checker as BT actually believe we are on the Locks Heath - Whiteley sub-exchange (STWHTLY) - though we are not because several Openreach engineers have confirmed this and our line speed is a miserable 1.4mbps at best!
Our postcode is PO15 7JX.
Also a little background to the area: we originally had a TPON, then we managed to get a copper line for ADSL, but the speed was/is very slow. Finally BT installed a sub-exchange, but they only provide now lines on the new exchange. So for those of us who have been there the longest we have the poorest speeds, but MAYBE we could get Infinity as the exchange we are connected to has been enabled - hence this questions.