Concise view of performance after 6 days use, and various experiments.
ADSL2 Performance: I'm absolutely amazed by the high stability this has brought - in daylight hours - to my line. Currently, from around 04:30 to 21:00 'ish the SNRM is 6.1db with only + or - 0.1db variation. As night moves on, as usual the SNRM gradually decays by 1.5 to 2db (that is normal behaviour for any router on my line).
On other good routers, I could see, for example, my neighbour's washing machine being on (from 0.5 to 1.2db dip for the whole cycle), and there were other devices being turned on that would make 0.5db dips till they were turned off......and other momentary downspikes of maybe 1.xdb. With the 8800 set to ADSL2, all that daytime variation is absent!
The night-time decay of 1.5 to 2db is much the same as a DG834GT, and a Billion 7800 can decay by up to 3db.
No drop-outs or self-boots.
Sync Rate: Very much on a par with a DG834GT and Billion 7800.......possibly the DG834GT has a very slight edge, but its very marginal between all 3.
Tickover CRC rates are higher than others though, but not massively so - circa 1-3/min as opposed to less than 0.3/min, but when 'weather' is around, the 8800 does not react nearly as much as other routers. Edited (next morning): The CRC rate has within the last 2 hours unexpectedly dropped to near zero.
Bitswapping; maybe a little more active than say one of my DG834GT choice.......perhaps roughly 1.5 times as much....much more pronounced at night.
ADSL1 mode: Higher syn rates by +5 to 10%, but then significantly higher CRC error rates, and the SNRM stability is less good......the decreased SNRM stability and higher CRC rates make me choose an ADSL2 option.
ADSL2+ mode: lower sync rate by maybe 15%, somewhat lower CRC rate....estimate 90% of ADSL2.
ADSL2 mode: best of all, with results described above.
