[AusNOG] DSL G.Fast Details

[Mark Delany]

On 03Feb15, Mark ZZZ Smith allegedly wrote:

> I found it particularly interesting that power is or can be supplied
> to the FTTdp node by the CPEs, which means the FTTdp equipment can
> possibly be installed inside the footpath pits themselves without
> needing power infrastructure

Is there an upgrade path to this approach or is FTTdp the end game?

I don't really understand how there could be an upgrade path as
replacing all the downstream copper with fibre leaves you with the
problem of powering the pit - unless the vestigial copper stays forever
as a power source. Alternatively, custom pit-to-premise cabling could
include POE-like stranding.

Given that upstream of the pit is active, an intriguing aspect of an
optics upgrade in this scenario is that pit-to-premise could remain
active after upgrading to fibre. Intriguing because active to the
premise is what some advocate as the real end game.

As an aside, at 50m gaps, how many premises per pit? 10-20 I guess?


Mark.
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