<div dir="ltr">Have a read of this Skeeve,<div><br></div><div><a href="http://static.googleusercontent.com/media/research.google.com/en//pubs/archive/36936.pdf">http://static.googleusercontent.com/media/research.google.com/en//pubs/archive/36936.pdf</a><br>
</div><div><br></div><div>Obviously written while they were still testing and reviewing their options, but they were leaning towards point to point delivery already.</div><div><br></div><div>Makes sense to me. WDM-PON standards weren't and still are not ready yet, and Google isn't the type of company to screw around trying to save a few dollars for short term gains.</div>
<div><br></div><div>-Colin</div><div><br></div><div class="gmail_extra">
<br><br><div class="gmail_quote">On 9 April 2014 06:38, Skeeve Stevens <span dir="ltr"><<a href="mailto:skeeve+ausnog@eintellegonetworks.com" target="_blank">skeeve+ausnog@eintellegonetworks.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Yes, but how does that matter?<div><br></div><div>Google Fiber also uses GPON and they are delivering 1G/1G (see: <a href="http://networkmatter.com/2014/02/27/google-fibers-brewing-little-secret-exposed-its-gpon/" target="_blank">http://networkmatter.com/2014/02/27/google-fibers-brewing-little-secret-exposed-its-gpon/</a>)<br>
<div class="gmail_extra"><br></div><div class="gmail_extra">While GPON may be asymmetrical for the end tail, the speeds it can achieve are clearly symmetrical in nature... and the speeds that can be achieved means that there is no reason at all that 100/100, 50/50, 25/25 or 12/12 can't be achieved - with no material impact to the network utilisation or cost.</div>
<div class="gmail_extra"><br></div><div class="gmail_extra">Still sounds like an artificial restriction to me. </div><div class="gmail_extra"><div class=""><div><div dir="ltr"><div><br>...Skeeve</div><div><br></div><div>
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<br><br></div><div><div class="h5"><div class="gmail_quote">On Wed, Apr 9, 2014 at 2:02 AM, Damian Guppy <span dir="ltr"><<a href="mailto:the.damo@gmail.com" target="_blank">the.damo@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<div dir="ltr">NBN is built on GPON tech, which is normally asymmetrical. I believe it is ITU-T G.984 which supports 2.488Gbit/s down and 1.244Git/s up. Most home users have an asymmetrical data requirement, so it makes sense to divide up the available spectrum with a bias to downstream. Same reason ADSL is used and is asymmetrical even through there are SDSL specs out there. <div>
<br></div><div>--Damian</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Mon, Apr 7, 2014 at 6:52 PM, Skeeve Stevens <span dir="ltr"><<a href="mailto:skeeve+ausnog@eintellegonetworks.com" target="_blank">skeeve+ausnog@eintellegonetworks.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div dir="ltr">Hey all,<div><br></div><div>I am sure this will spurn a healthy discussion... perhaps with conflicting views...</div>
<div><br></div><div>But I was wondering the other day 'Why aren't NBNCo tails sold as symmetric speeds?'</div>
<div><br></div><div>Considering:</div><div><br></div><div>- The transit the RSP buys is symmetric (nearly always)</div><div>- The network core of the RSP is symmetric</div><div>- The handoff to either NBNCo or an aggregator (and then NBNCo) is pretty much always symmetric</div>
<div>- The PoI's core is symmetric</div><div>- The fibre to the home is symmetric capable</div><div>- The NTU is just ethernet - symmetric</div><div>- Anything they plug into the NTU is symmetrical - ethernet</div><div>
<br></div><div>Google Fibre in the US is 1G/1G in speeds... </div><div><br></div><div>So... unless I am missing something obvious (always possible)... Why are NBNCo tails not sold as symmetrical speeds?</div><div><br></div>
<div>I am not sure why there is this artificial design in these products to make them asymmetric. There doesn't seem to be any gain by doing this that I can think of.</div><div><br></div><div>Gone are the days of DSL like speeds and unbalanced design... even ATM was symmetrical.</div>
<div><br></div><div>Keen for peoples opinions.<br clear="all"><div><div dir="ltr"><div><br>...Skeeve</div><div><br></div><div><div><b style="font-size:13px;font-family:Calibri">Skeeve Stevens - </b><span style="font-size:13px;font-family:Calibri">eintellego Networks Pty Ltd</span></div>
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