[AusNOG] Brisbane gets "NBN" early??

Adam Griffiths adam at griffiths.org.au
Fri Oct 15 15:45:05 EST 2010

On Thu, Oct 14, 2010 at 10:04 PM, Andrew Fort <afort at choqolat.org> wrote:
> On Thu, Oct 14, 2010 at 9:01 PM, phil colbourn <philcolbourn at gmail.com> wrote:
>> So, they ran a point-to-point optical fibre 1.4km long in a sewer pipe and
>> it worked! Amazing.
>> "microtrenching cuts a slot around 600mm deep and 20mm wide in which the
>> cable is laid"
> Oh dear.  Someone might suggest they run a testbed microtrench next to
> a road, and leave a test fibre "in the groove" for a year or more.
> They may be surprised with where the fibre ends up.

Uecomm used a significant amount of microtrenching in the early 2000's
(a few 100's km of it across most states) but pulled it all out at
very significant cost. The main problem being that bitumen is not
rigid/solid and after a few 100,000 vehicles the cable pop's to the
top of the road.

Particularly bad problem in QLD with the increased temperature

Works well in environments were roads are constructed of concrete, but
that's not the norm in Australia.


> -a
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