I'm just curious as to what hardware is in the cabinets.
From what I can gather it's as follows:
96 port = Huawei MA5616 and 4 x 24 port VDSL2 line cards
128 port = ECI M41 and 4 x 32 port VDSL2 line cards
256 port = ECI M82 + 8 x 32 port VDSL2 line cards
288 port = Huawei MA5300 + 12 x 24 port VDSL2 line cards
This seem about right?
Obviously denser line cards than these do exist but to use them would cause BT some cable management headaches when they move to profile 30a as the current 30a line cards are only as dense as the ones mentioned here, they need twice as many DSPs as profile 17a, so to use the denser line cards would mean rearranging subscribers later on or having to wait for 30a cards to match that port density.