Just curious ....... I'm lucky enough to have a OR FTTC cab in spitting distance and get "Full Speed". My line though says that it can cope with 128 Mbit/s / 28.7 Mbit/s but it's capped at 80/20. I get that BT use VDSL2 with a 17a profile and this has a max downstream rate of 100 Mbit/s. I've friends is Europe and Australia getting 100 Mbit/s from FTTC VDSL2 17a with real world rates of 94 Mbit/s download. Is this 80 m/bit cap a technical one giving some other benefits or a product marketing feature?
BT Infinity 2 20/80 cool
lee111s (fountain of knowledge)
Sun 09-Jul-17 17:45:19
Yes, but you already knew that, given operators on the continent don't have it capped at 80/20
I know elsewhere they offer higher speed VDSL2 17a. BUT what I don't know is why ....... Is there an upside to offering 80/20 e.g. does the lower power reduce crosstalk so giving people further away better speeds? Is the cap reason a marketing one. ie you can claim that 20% off people get our top speed or some such thing? I'd just really like to know what the rationale is for 80/20.
Likely a combination of both a small number of customers would benefit (and yes likely less power needed) and the fact that G.Fast has always been the next step and will offer speeds of 81-330meg (Openreach/Wholesale won't offer it if the speed estimate is below 80mbps as far as I know).
I think only 10% of lines are close enough to achieve 80/20, only 5% could achieve 100/25 on VDSL2 17a.