<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-family: Calibri, sans-serif;"><div><div>I’d say that 150m limit was either changed or removed as I have several services that are considerably longer than that (1 is ~340m from multiport to PCD) only issues were in waiting for the longer cables to arrive for the installer (guy who did the job said he’s got access to 500m lengths as required)</div><div><div id="MAC_OUTLOOK_SIGNATURE"></div></div></div><div><br></div><span id="OLK_SRC_BODY_SECTION"><div style="font-family:Calibri; font-size:12pt; text-align:left; color:black; BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid; BORDER-RIGHT: medium none; PADDING-TOP: 3pt"><span style="font-weight:bold">From: </span> AusNOG <<a href="mailto:ausnog-bounces@lists.ausnog.net">ausnog-bounces@lists.ausnog.net</a>> on behalf of John Edwards <<a href="mailto:jaedwards@gmail.com">jaedwards@gmail.com</a>><br><span style="font-weight:bold">Date: </span> Thursday, 25 February 2016 at 11:20 AM<br><span style="font-weight:bold">To: </span> Jake Anderson <<a href="mailto:yahoo@vapourforge.com">yahoo@vapourforge.com</a>><br><span style="font-weight:bold">Cc: </span> Paul Brooks <<a href="mailto:paul.brooks@tridentsc.com.au">paul.brooks@tridentsc.com.au</a>>, "<<a href="mailto:ausnog@lists.ausnog.net">ausnog@lists.ausnog.net</a>>" <<a href="mailto:ausnog@lists.ausnog.net">ausnog@lists.ausnog.net</a>><br><span style="font-weight:bold">Subject: </span> Re: [AusNOG] NBN 1Gb "fiber" services<br></div><div><br></div><div dir="ltr">NBN FTTH is using Corning's 8-port multitap, sometimes with a 4-port extension.<div><br></div><div>From memory, they originally specified a maximum drop-cable length of 150m. This may limit the number of premises that can physically connect to the multi-tap in a neighbourhood with 20m street frontages on 1/4 acre blocks.</div><div><br></div><div>Because of the use of 12-fibre ribbon cable (1 ribbon per multitap), it would be tricky to fix a physical fault without moving 8 services at a time - this might be why 8 ports are spare on the splitter. The ribbons have 12 fibres as well - maybe there is a 12 + 12 + 8 = 32 configuration that leaves 2 sets of 4 fibres spare.</div><div><br></div><div>John</div><div><br></div><div><br></div><div><br><div><br></div><div><br></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">On 25 February 2016 at 10:09, Jake Anderson <span dir="ltr"><<a href="mailto:yahoo@vapourforge.com" target="_blank">yahoo@vapourforge.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<div>On 25/02/16 10:22, Aftab Siddiqui
wrote:<br>
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<div dir="ltr"><br>
<div class="gmail_extra">
<div class="gmail_quote">
<div> Hi Jake,</div>
<div><br>
</div>
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<div bgcolor="#FFFFFF" text="#000000">The max split ratio
is 32:1, Generally NBN are running ~20:1 or so in the
field I believe (or thereabouts) </div>
</blockquote>
<div><br>
</div>
<div>Is this NBN policy to do max 32:1 splits to keep
contention to certain level? because thats not a technical
limitation or ALU's limitation for sure.</div>
<div> </div>
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</blockquote></span>
The fibre distribution hubs they are installing have 32:1 splitters
in them. Generally they aren't using every port on the splitters and
I believe the design was to use a max of 24 ports per splitter
though don't quote me on that.<br>
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