<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:0 0 0 .8ex;border-left:1px #ccc 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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