Re: Muni broadband sucks (was: New minimum speed for US broadband connections)

[Josh Luthman <josh () imaginenetworksllc com>]

Baldur,

Dude you are just so wrong.  You really need to stop guessing at things.

> A 192 core cable is approximately twice the price of a 96 core cable

192 doesn't even really exist in the mass market.  The cost of 144 is not
double that of 72.  288 is not double the cost of 144.  This is accurate as
of June 1 2021 from my quotes.

> On top of that, the price to splice is also linearly related to the number
of cores to splice. Yes there is the setup time, but then working on 192
cable takes a whole day, requires larger enclosures, requires larger
manholes, while we might only need 2 (!) splices to do the same work with
GPON.

A)  Don't splice the 190 or B) use ribbon and it takes only a few minutes
total.

Josh Luthman
24/7 Help Desk: 937-552-2340
Direct: 937-552-2343
1100 Wayne St
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Troy, OH 45373


On Thu, Jun 3, 2021 at 12:14 PM Baldur Norddahl <baldur.norddahl () gmail com>
wrote:

> On Thu, Jun 3, 2021 at 5:41 PM Masataka Ohta <
> mohta () necom830 hpcl titech ac jp> wrote:
>
> > As cabling cost is mostly independent of the number of cores in a
> > cable, as long as enough number of cores for single star are provided,
> > which means core cost is mostly cabling cost divided by number of
> > subscribers, single star does not cost so much.
>
> Sorry but that claim is completely wrong. Cabling cost scales linearly
> with the number of cores. A 192 core cable is approximately twice the price
> of a 96 core cable. Only at very low core count does this break up
> somewhat. A 12 core cable is still significantly cheaper than 24 cores. A 1
> core cable is the same price as 4 cores however.
>
> On top of that, the price to splice is also linearly related to the number
> of cores to splice. Yes there is the setup time, but then working on 192
> cable takes a whole day, requires larger enclosures, requires larger
> manholes, while we might only need 2 (!) splices to do the same work with
> GPON.
>
> Then there is the price to the ducting. A 192 core cable requires bigger
> ducts and plastic is not only expensive, it has recently become scarce.
> Putting in a 24 core cable in a 10/6 duct is much cheaper than a 192 core
> cable.
>
>
> > Then, PON, needing large closures for splitters and lengthy drop
> > cables from the closures, costs a lot cancelling small cost of
> > using dedicated cores of single star.
>
>
> Now a splitter can be mounted in a splice enclosure taking up the same
> space as 12 splices. We use dome shaped water tight enclosures for 96
> splices and then we replace one of the splicing trays with the splitters.
> All of this fits in a handhole about 70 cm long, 60 cm wide and 30 cm deep.
>
> Another operator here instead has the splitters in cabinets with a cabinet
> for every 50 to 200 passed homes. You could build a P2P network like that,
> but then you would need power and active equipment in these cabinets.
>
> Not sure what you are talking about with regards to drop cables. The house
> connection is identical in a GPON and P2P network.
>
>
>
> > On the other hand, if PON is assumed and the number of cores in a
> > cable is small, core cost for single star will be large and only
> > one PON operator with the largest share (shortest drop cable from
> > closures to, e.g. 8 customers) can survive, resulting in monopoly.
>
>
> Typically the infrastructure owner runs the PON equipment and resell vlan
> based access to ISPs.
>
> Regards,
>
> Baldur