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  #32  
Old July 7th 08, 03:19 PM posted to uk.telecom.broadband
Klunk
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Posts: 98
Default Why isn't ADSL rate adaptive

On Mon, 07 Jul 2008 13:04:07 +0100, Andy Burns passed an empty day by
writing:

On 07/07/2008 11:32, wrote:

IMHO the correct way to manage the SNR threshold is do do it
adaptively, measure the error rate, if it is high say over 30% reduce
the sync rate, if it then drops below say 10% increase the sync rate.


Have you seen what 1% (let alone 10% or 30%) packet loss does for TCP
throughput?


I've not seen it - what does it do? I'm guessing it has a serious
throttling effect.

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