hi soms
>> attnt 63
>> SNR 16 at best
How low does that SNR drop?
I hate to say this, but personally if that was my own line I would leave maxdsl alone right now.
Max still has a lot of problems that need ironing out, and most of those problems are occuring on the longer lines, and things are not quite turning out as perhaps they should.
The reasons why I have doubts with those particular stats are as follows
If your SNR Margin is 16... then..
A crude estimate of what your line is capable of is 1080kbps (kilo bits per second).
If your SNR Margin drops to 10dB.. then..
A crude estimate of what your line is capable of is 570kbps (kilo bits per second).
(taken from
here)
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If at best you manage to sync at 1080, the times when your snr margin drops lower.. and because of the way the bRAS profile is set, you will still be limited to a throughput speed of 512kbps.
(see
maxdsl bRAS table - bottom of page).
In the meantime during the training period you will very likely see frequent disconnections, and variations in speeds. You are also most likely to have interleaving turned on which will slightly affect your latency.
Therefore based on the info that we have on your line, you are unlikely to be much better off Im afraid.
>> Are there any external influences on attenuation.
Not really its mostly down to line length - although internal telephone wiring can affect this.. or perhaps if you have a fault on your phone line. Generally speaking attenuation is fairly static.
Since you mention that you have a few problems already.. I honestly think you would be best right now staying on the traditional product.. or at least until BTw sort out some of the existing stability issues.
tbh Ive seen a couple of people who have previously had stable 1Mb lines, suddenly reporting speeds of less than 512 kb or even 256 on occasions because of the way the bRAS profile works.
Ive also seen a few mumblings of late saying that max should perhaps now only be put on lines that could previously handle 2Mb or maybe 1Mb - .. simply because its the users that couldnt previously get the higher speeds that are having the worst time on MAX. :/
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Bear in mind I could be wrong.. and you may just eke in a 1Mb connection.. its a risk you take with max.. but from info provided the odds are that your line is not best suited.
Normally Id recommend you try see if you can push the SNR up more, but it seems like you have already done all you can on your side of things.
Sorry to be the bearer of bad news