In a greenfield build, cost difference for plant between PON and active will be negligible for field-based splitters, non-existent for CO-based splitters.
If the company already has some fiber in the ground, then depending on where it is might drastically reduce build costs to use field-based splitters and PON. On the CO-side electronics, however... I think it's safe to say that you can do GPON under $100/port. AE is probably going to run close to $300/port. That's a pretty big cost difference, and if it were me I'd be looking pretty hard at a PON deployment for the majority of the customers along with a certain amount of fiber left over for those who need special services. On Thu, Feb 7, 2013 at 12:39 PM, Jay Ashworth <j...@baylink.com> wrote: > ----- Original Message ----- > > From: "Masataka Ohta" <mo...@necom830.hpcl.titech.ac.jp> > > > Scott Helms wrote: > > > Now, in general for greenfield builds I'd agree except for > > > PON, which is in many cases cheaper than an Ethernet build. > > > > As PON require considerably longer drop cable from a splitters > > to 4 or 8 subscribers, it can not be cheaper than Ethernet, > > unless subscriber density is very high. > > Oh, ghod; we're not gonna go here, again, are we? > > Yes, a PON physical build can be somewhat cheaper, because it multiplexes > your trunk cabling from 1pr per circuit to as many as 16-32pr per circuit > on the trunk, allowing you to spec smaller cables. > > It does, however, limit you to being able to run PON capable L1 protocols > over it, which may have *system*-cost implications over the life of the > plant. But yes, the initial install *may* be a bit cheaper (depending > on the tradeoff cost of the splitters vs the larger count fiber and > the reduced size of patching facilities, and the relative cost of the > access multiplexers, and... > > Hey, wait! How did I end up on Scott's side? :-) > > Cheers, > -- jra > -- > Jay R. Ashworth Baylink > j...@baylink.com > Designer The Things I Think RFC > 2100 > Ashworth & Associates http://baylink.pitas.com 2000 Land > Rover DII > St Petersburg FL USA #natog +1 727 647 > 1274 > >
