@ Kitz & BS,
Another thing to be aware of, particularly as you have an ECI 256, is that there is a good chance that your initial speed will degrade over time due to power cut-back to reduce cross talk on competing twisted pairs.
To give BT Wholesale their due, they do mention that on their estimator.
I have an example of a service actually skipping two intermediate PCPs with a map measured distance of about 1 Km. The BT W estimate, which is still available, says about 35.7 Kbps down. The initial sync speed was just under 30 Mbps but that has now dropped to around 25Mbps which results in throughput speeds around 22 Mbps.
If Kitz found herself in that position she might well be catawalling most of the night !
Kind regards,
Walter