Mike, Denver, et al,
I think that the numbers (whether it's 60% or whatever) being used for DSL rating purposes will at some point be relegated to anachronisms. They will become moot issues, when deep fiber based Passive Optical Networks and VDSL-dependent Full Service Area Networks (PONs/FSANs) come into play.
The reasons for many of the ineligible lines today stem from problems having to do with distances, primarily, one way or another.
Either the distance is too high, necessitating load coils, or the extended distances are the cause for greater levels of accumulated impairments manifesting longitudinally, or due to the longer distances even marginal balances in lines could become fatal issues, etc. And bridged taps play into this logic, as well.
When fiber is brought deep into the hood, however, and copper from the local cross boxes in the pedestals and poles are cross-connected to the optical network unit (ONU) interfaces, all of these nasty distance related things go away. And so do the percentages. The recent Atlanta FTTC implementation should prove this correct, IMO.
BTW, I am not holding my breath while waiting to be proved right on this one. -g-
Regards, Frank Coluccio |
