Originally Posted by M-B
1) There is an automated process (which sometimes fails) that measures the speed capabilities of your line based on tweaking the speed upwards until the line drops and then backing off a bit. This can take up to 10 days to achieve a setting whereby the line is at it's fastest stable speed. You turning off the router at night can affect the results. (granted this is usually only done for the first 10 days of a new line, but sometimes the BRAS profile is amended mid-life).
- that is what I thought too until last week when I whinged at my (LLU) ISP who grudgingly selected 'MAX' on my line. "Do I expect the BRAs profiling to drop that over the next few days", quoth I: " No", he said, "LLU does not use that technology. The speed may change if the SNR worsens, but should stay at xxx" and it has. Mind you, pinch of salt there as ISP man was 'from foreign parts'.
Then, of course we have HSB via whatever, which is a whole new ball-game and again I think not rate adaptive?