Kitz Forum
Broadband Related => ADSL Issues => Topic started by: renluop on November 24, 2010, 11:40:51 AM
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Until recently my sync was in the 7xxx Kb range that gave me an IP profile 6000/6500 with 46/7 dB attenuation and 6/6.5 noise margin.
Of late I have, when BT are fiddling >:D ;D, I have turned the router off overnight. The syncs have been at 8500Kb+ even as high as 9300 Kb with no changes in attenuation and noise margin.
The last two days, however, sync has continued very high, attenuation unchanged, but noise margin starts off ~3.5dB. Of course come nighttime there are drops and resyncs.
Not of major inconvenience now, but what might be cause of sudden low SNR in day, and in any case why has the router taken to such high syncs on a just on 3km line (likely road route via cab)?
Router 585 v7
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Hi
quote Of late I have, when BT are fiddling Evil Grin, I have turned the router off overnight. The syncs have been at 8500Kb+ even as high as 9300 Kb with no changes in attenuation and noise margin.
But your present SNR Margin is ~3db . Attenuation is NOT expected to change
quote : why has the router taken to such high syncs on a just on 3km line (likely road route via cab)?
With the normal default SNR Margin of 6 db you could expect to connect at about 7200Kbps wich tie up with your original info , with only 3db SNR margin you are gaining Synch rate , it can be as much as 1200kbps for the 3db decrease in SNR Margin.which would give you about 8400Kbps ,this is shown in your present stats . The problem as you have discovered is that the improved synch rate has come at the expense of stability :(
Why you are synching with such low SNR margin I am not sure ,I take it you are not tweaking your SNR margin ? using something like Routerstats or DMT
Regards Jeff
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With the TG585 V7 you can't tweak.
4hrs50 down to 7833kbps; noise 3.5 now.
The high syncs as I said happened with the margin maintained until Tuesday. It was only later that the margin decreased,