You seem to have a weird idea of what NBN fttn is. It is just a device with fibre backhaul for vdsl ports.monotonehell wrote: It's a completely different situation.
Up until the NBN the service providers (Telstra, Optus, etc) had to provide a service that linked the copper wire from the exchange to the copper wire to your boundary point. This was done at the pit/cabinet with a crimp connector. Cost of a few cents plus labour. Metal wires all the way, no matter if your talking about voice or ADSL on top of voice.
Now with the NBN, a (neo)broadband service needs to be provided. This is a digital fibre service. With FTTP that fibre was simply divided at the pit/cabinet with a passive splitter at the cost of a few dollars plus labour.
However with the other technologies in the NBNco mix there must be an active device (powered + logic) in the cabinet or pit.
With FTTN there is a mini exchange in the much larger cabinet, converting the 'light signal' to an electrical signal (thus a power source is required) to be sent down the copper cable to the pit which is then sent down the lead in wire to the home. Any joints and other problems with the wire degrade this signal greatly often bringing FTTN to speeds not much faster than ADSL. The equipment costs here are great because the cabinet is basically a mini-exchange with modems, similar to how ADSL works, except the DSL modems are in the exchange and laid over the analogue voice signal.
As I already said telstra has been using nodes for decades.
They have rims and tophats and other names for relatable tech of nodes supplying copper services.
Many adsl connections for 20 years have been on a mini exchange/node fed from fibre. Same with pots, isdn etc etc.
For NBN fttn nothing is new other than the cards are vdsl instead of adsl, pots or isdn.
The fibre is connected to the fibre port of the device, then you have vdsl ports. Those vdsl ports are jumpered to the copper pair.
This is exactly what happens in main exchanges also. There is no significant difference from an exchange vs mini exchange other than possible housing space.
No magic just old skool telephony we have been using forever.
To NBN fttn an area you just install a node and then install a tie cable from joint, pillar or cabinet. Jumper the customer last mile copper pair to the tie cable to the new node instead of to the old node or exchange.
A building with a 100pr lead-in has single pairs redirected to the NBN node. This means existing pots, isdn, adsl, shdsl and all else continue to function on the other pairs of the lead-in.
There is no magic between the fibre and copper, it is all stuff we have been doing for a very very long time.
Fttn has been used for decades for many many services by the telephone industry.
Be it telstra with nodes or private pabx nodes.
There is no new challenges because your service terminates to its line card 200m from your house vs 6km from your house.