[AusNOG] DSL G.Fast Details

[Mark Delany]

> > 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'm not quite sure what you're asking. Are you asking about an upgrade path to FTTdp, or an upgrade path from FTTdp to FTTP?

From FTTdp to FTTP. Say, 10 years after we're all spun up with FTTdp.

> 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

Yup. That was rather the point of my post. How that might be solved as
part of moving to fibre all the way.

> * That's the point of my comment - the power for the 'pit'/FTTdp equipment in the pit comes from the attached subscribers' CPE (and therefore the subscribers' mains supply.) The FTTdp equipment in the pit doesn't need an independent power source. In other words, if there are no active CPE attached to the FTTdp equipment in the pit, it isn't operating.
> 
>  - unless the vestigial copper stays forever
> as a power source. Alternatively, custom pit-to-premise cabling could
> include POE-like stranding.
> 
> * There is no custom pit-to-premise cabling, the existing copper leadins are used

Yes I know. But in a post-FTTdp world when you spin up new fibre to
the premise you might include something that solves the power problem.


> * I think the emerging trend could be described as 'wireless cloud first' for typical end users. I consequently wonder whether many 100s of Megabits to the home is really going to be necessary.

That's not what the bandwidth numbers say.


Mark.
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