[AusNOG] "The NBN" will run on copper for *ever*

[Curtis Bayne]

Without getting too political (as I am apt to do), there are a few
fundamental realities here:

1. The cost of replacing the copper last mile will probably be delayed
until the last possible moment.
2. Shannon and Hartley cannot be argued with when you have a
bandwidth-limited transmission medium.
3. Wholesale HFC is right for the wholesale picking and has like a LOT of
RF spectrum if you re-farm.

What does this mean? Hell, if I knew, I'd be making money, not posting.

Hope you're all having an awesome weekend :)

-Curtis


On Fri, Jul 11, 2014 at 9:19 PM, John Lindsay <johnslindsay at mac.com> wrote:

> That's the politically acceptable version and serves current purposes.
>
> What actually happened was the competitive DSLAM operators refused to
> allow Telstra to remonopolise the copper CAN downstream of nodes.
>
> Now we have a federal government that is prepared to do that so the
> landscape has changed.
>
> Except the loser this time will be Telstra, who must be having a good old
> ponder about things about now.
>
> John Lindsay
>
> > On 11 Jul 2014, at 9:08 pm, Guy Ellis <guy at traverse.com.au> wrote:
> >
> > Hi Paul,
> >
> > I think this is a symptom, rather than a root cause.
> > When the FTTP rollout was announced, changes to the bandplan for VDSL
> seemed unnecessary and went on to the backburner.
> > Suddenly there is a bit of a scramble to get this sorted.
> >
> > Regards,
> > - Guy.
> >
> >
> >> On 11/07/2014 8:24 PM, Paul Brooks wrote:
> >>> On 11/07/2014 5:37 PM, jake anderson wrote:
> >>>> On 11/07/2014 5:10 PM, Guy Ellis wrote:
> >>>> Hi Reuben,
> >>>>
> >>>> There are two reasons why there has been little VDSL2 deployment
> locally...
> >>>>
> >>>> (i) Optimum loop length is ~<800m and the old exchanges are just too
> far apart.
> >>>> You must have nodes in order get most subscibers <800m.
> >>>>
> >>>> (ii) In the case of iiNet, Optus and TPG their DSLAM rollouts were
> completed last
> >>>> decade and are only ADSL2+.
> >>>> Given that we have known that some from of NBN has been coming for
> years, and the
> >>>> CAN uncertainty, no operator in their right mind is going to spend
> $$$$ on VDSL2
> >>>> linecard upgrades, let alone think about deploying nodes.
> >>>>
> >>>> There are no technology problems with VDSL2, other than the rules of
> physics and
> >>>> Shannons law!
> >>>> FTTN has been already deployed in many countries using VDSL2.
> >>>> Hopefully Australia will see some benefits as a late-comer with
> enhancements such
> >>>> Vectoring and Bonding.
> >>>> FTTH would be nice but it's not going to happen with this Government.
> >>>>
> >>>> Regards,
> >>>>  - Guy.
> >>> I always wondered why they never offered VDSL for customers closer
> than 800m or so.
> >>> I mean it wouldn't cost them a *great* deal to add a few vdsl
> linecards to the mix.
> >> There's also the issue that VDSL2 is not allowed on the public copper
> network yet,
> >> until the CA C559 code is updated to include the higher frequencies.
> Until this
> >> happens, VDSL2 is OK within buildings, but not on copper from Telstra
> exchanges or RIM
> >> cabinets (Or FTTN cabinets). There are exceptions permitted within C559
>  for trials,
> >> which the NBN/Telstra FTTN trial is relying on.
> >>
> >> TransACT is a special case, as they deployed their own dedicated copper
> cables from
> >> their node cabinets to the homes, TransACT's VDSL2 doesn't run along
> Telstra copper.
> >>
> >> FWIW, there is a Comms Alliance VDSL2 Working Group active now working
> (for the second
> >> time) to update C559 to bring VDSL2 into the permitted technologies
> list to enable FTTN.
> >>
> >> (back to the football.....)
> >>
> >> Paul.
> >>
> >> _______________________________________________
> >> AusNOG mailing list
> >> AusNOG at lists.ausnog.net
> >> http://lists.ausnog.net/mailman/listinfo/ausnog
> >
> >
> > --
> > Guy Ellis
> > guy at traverse.com.au
> > www.traverse.com.au
> > T: +61 3 9386 4435 M: +61 419 398 234
> >
> > _______________________________________________
> > AusNOG mailing list
> > AusNOG at lists.ausnog.net
> > http://lists.ausnog.net/mailman/listinfo/ausnog
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