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[aesmith]

Hi,

Something I've always wondered about, when you punch a number into BT's availability checker it gives both a value for "Rate" and for "Range".   Any number I've checked has always given a higher figure for Range than for Rate.   For example Rate might be "Up to 1" while Range is "0.75 to 2.5".  Does anyone know exactly what these figures mean, for example is Rate the IP throughput and Range referring to Synch Speed?

[ejs]

I just assumed they are all "sync speed" (actual net data rate), and the different figures are mid, low, high estimates. They could probably drop the "Up to" part as it's fairly meaningless.

[aesmith]

Fiddling around, because I'm thinking of changing ISP I happened to notice that BT's DSL Checker has updated out "estimated speed" from "Up to 1.0" to "Up to 2.0".  I am still puzzled as to how those figures are derived, if it was purely based on physical parameters then I wouldn't have expected it to have changed, nor would I expect our estimate to be higher than the two neighbours I checked, both of whom are on shorter lines.   It doesn't seem to be based on historical performance either.

It seems to have pulled through to the estimates that some ISPs show, but not all.  For example Plusnet estimates a range of 1-3.5, whereas SSE says "Up to 4.0"