SN/R line variation

[CurlyWhirly]

After monitoring my line stats for a number of weeks, I can see a pattern emerging which is that in the morning and afternoon my SN/R rises to 29.5 dB but in the evening falls down to 24.5 dB

This happens on a daily basis but is it normal and also the variation is around 5 dB which seems quite high!
I wonder if this could be because in the evenings (when some people get home from work) and log on that this 'activity' can cause general SN/R margins to drop?

Also does this mean that when I am on Max DSL, I am likely to see speed variations throughout the day depending on what my SN/R margin is at that particular moment in time?

Finally with Max DSL, how often does RAMBO analyse your line stats to determine your speed so as to avoid you getting disconnected if your SN/R margin falls too low say to below 6 dB?

 

[CurlyWhirly]

It means if your SNR margin drops far enough, you'll lose sync (and probably resync at a lower speed). The SNR margin should then go back up, but you shouldn't get kicked off.

Thanks that explains what will happen to me when I'm on Max DSL


Incidentally after a bit of research I found out that crosstalk can make a slight difference to SN/R levels and also that your line speed is determined dynamically every time it syncs to the exchange so Max DSL is a 'dynamic' system!