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Nah  . Banding exists on ADSL2+ WBC DLM as well as OR DLM  . Look at the nice round figures.
I believe the highest SNRM setting is 15dB.
My broadband basic info/help site - www.robertos.me.uk | Domains,site and mail hosting - Tsohost.
Connection - Plusnet UnLim Fibre (FTTC). Sync ~ 58.7/14.6Mbps @ 600m. - BQM
"Where talent is a dwarf, self-esteem is a giant." - Jean-Antoine Petit-Senn.
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Allergy information: This post was manufactured in an environment where nuts are present. It may include traces of understatement, litotes and humour.
Edited by RobertoS (Wed 02-Jul-14 19:54:34)
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How come it's 32.6?
Edited by deleted (Wed 02-Jul-14 20:37:12)
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That's the result of banding. The sync gets fixed, so the noise margin goes up. Just like 8128kbps on ADSL Max on short lines .
Remember, that's how we used to estimate ADSL2+ speeds for people?
My broadband basic info/help site - www.robertos.me.uk | Domains,site and mail hosting - Tsohost.
Connection - Plusnet UnLim Fibre (FTTC). Sync ~ 58.7/14.6Mbps @ 600m. - BQM
"Where talent is a dwarf, self-esteem is a giant." - Jean-Antoine Petit-Senn.
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Allergy information: This post was manufactured in an environment where nuts are present. It may include traces of understatement, litotes and humour.
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Yeah, the noise margin goes up to try and stop the disconnections.
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No.
Banding is not done by adjusting the noise margin. It is a sync cap both up and down. The noise margin rise is the result, not the cause of the low speed.
I agree the low speed is why the error rates fall, and the associated high noise margin means disconnections due to noise tend to decrease.
My broadband basic info/help site - www.robertos.me.uk | Domains,site and mail hosting - Tsohost.
Connection - Plusnet UnLim Fibre (FTTC). Sync ~ 58.7/14.6Mbps @ 600m. - BQM
"Where talent is a dwarf, self-esteem is a giant." - Jean-Antoine Petit-Senn.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Allergy information: This post was manufactured in an environment where nuts are present. It may include traces of understatement, litotes and humour.
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I never suggested the noise margin was the cause of the low speed. I said the noise margin has been raised in response to the disconnections.
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That is true in a way, but is a misleading and incorrect way of describing what is happening. It does not help the poster.
Direct setting of the target noise margin by the DLM does not go above 15dB, as I said earlier. It is when that fails that banding is used instead.
My broadband basic info/help site - www.robertos.me.uk | Domains,site and mail hosting - Tsohost.
Connection - Plusnet UnLim Fibre (FTTC). Sync ~ 58.7/14.6Mbps @ 600m. - BQM
"Where talent is a dwarf, self-esteem is a giant." - Jean-Antoine Petit-Senn.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Allergy information: This post was manufactured in an environment where nuts are present. It may include traces of understatement, litotes and humour.
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Banding is applied to prevent the modem resyncing at a ridiculously low rate. This is not the case here.
In this case the noise margin has been raised to try and stop disconnections. This helps the poster realise that the problem is caused by disconnections.
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I agree with RobertoS.
It appears the connection speed has been limited in order to stop disconnections. The result of the connection speed being capped is that the SNR has gone up.
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I can't see how reducing the connection speed would reduce disconnections, but I can see how raising the SNR margin would.
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