I'm not sure what checker the support guys are referencing upon because as you mention your exchange has been upgraded to 21CN so ADSL2+ is possible.
But, BT don't simply move all lines to 21CN when they upgrade the exchange, only new lines go on to it, so it doesn't really help us or any ISP.
BT give ISP's "allowances" in which over many months they are able to upgrade a small number of lines per exchange. Unfortunately this means that it can take anywhere from 1 to 12 months to actually move lines to the new equipment.
Of course, BT offer a way for ISP's to "expedite" a one-off upgrade ahead of their "scheduled batches", and charge for the priviledge, which is around £15 inc VAT.
So, basically there are two options. You can either wait until BT let us know we can upgrade lines at your exchange as part of an allocation, or you can pay the one-off expedite fee which we just pass on at cost to get upgraded ASAP, in which case if you raise a ticket with us we can get on to that for you.
Either way BT win, we and the customer have to pay.
Edited by Adsl24 (Sun 26-Feb-12 19:23:38)