This is what I was hoping to hear - that people are getting service at over 2.5km - albeit with variable speeds and that the higher clean figures are attainable.
I thought that the line speed would drop off in a near linear manner at this sort of range so I have a couple of questions...
1. Is it possible that the bit of line that comes after his house has a problem (although the BT engineer seemed to think not)?
2. He is with BT - is it possible that BT prioritises speed for their own customers?
What you might be finding is that a large number of tones or bins are using just one or two bits rather than the maximum so any small change in noise or attenuation of those could result in the loss of the remaining ones and what looks to be a disproportionate effect.
The latency figures do suggest he has a greater level of interleaving on.
You could have localised noise in your house, or the modem has slightly different termination characteristics resulting which can effect the sync speed - even on a good line.
And NO, BT would not be prioritising speed for their own customers.
Make sure your modem is located at the master socket and there is a minimal amount of electrical or electronic equipment close by. Does the cable enter the house and immediately terminated in teh master or is there a large amount of internal wiring?
M H C
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