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A recent Ofcom (UK) report has a very interesting chart of ADSL2+
line speeds:<br>
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Ofcom Infrastructure Report 2012 Update<br>
<a moz-do-not-send="true"
href="http://stakeholders.ofcom.org.uk/market-data-research/other/telecoms-research/broadband-speeds/infrastructure-report-2012/">http://stakeholders.ofcom.org.uk/market-data-research/other/telecoms-research/broadband-speeds/infrastructure-report-2012/</a><br>
<a moz-do-not-send="true"
href="http://stakeholders.ofcom.org.uk/binaries/research/telecoms-research/infrastructure-report/Infrastructure-report2012.pdf">http://stakeholders.ofcom.org.uk/binaries/research/telecoms-research/infrastructure-report/Infrastructure-report2012.pdf</a><br>
Figure 4 on page 11:<br>
<img id="_x0000_i1025"
src="cid:part3.07080401.07060304@layer10.com.au"
width="593" height="350" border="0"><br>
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<p class="MsoNormal">This chart is effectively the result of
the ADSL line-sync/attenuation curve combined with the
increasing area of circles of increasing radius around the
exchange - and demonstrates very clearly why so many people
get low ADSL2+ line speeds.<br>
(Exercise for the reader - work out how VDSL2 would be any
different)<br>
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Also scatter-plots of sync-speed with line-length, as per
Figure 8 from another UK report:<br>
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<img src="cid:part4.00060902.08090008@layer10.com.au" alt=""
width="553" height="240"><br>
<p class="MsoNormal">Now every DSLAM network operator can put
together similar charts - but I'm not aware of any stats for
Australian networks, apart from the heat maps put out by
iiNet and the adsl2exchanges.com.au site, which aren't quite
what I'm looking for.<br>
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<p class="MsoNormal">For all you DSLAM operators - I would be
very interested in putting together similar charts for the
Australian networks, to see how our copper loop network
varies from the UK network. If anyone is willing to share
data or statistics, I'm very interested in pulling together
similar Australian charts - on a non-identified, aggregated,
anonymised basis if you wish.<br>
Please contact me off-list - thanks.<br>
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<p class="MsoNormal">Paul.<br>
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<p class="MsoNormal"> <br>
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