It may be important here for Choice in responding to clarify what the NBN supplies for each type of service. And also qualify which RSP’s will support user supplied modems. The online advice suggests you cannot have a home phone service from the NBN unless you use their modem.
FTTN, FTTC and FTTB require a VDSL modem. The common NBN and RSP preferance may be for them to provide the modem.
FTTP, FW, Satellite, HFC the NBN/RSP provides a NTD which eliminates the need for a user supplied modem. Still may require a router, with many of us able to reuse an existing router if it has a suitable uplink port. Caveate on a home phone service unless the RSP provides the router.
There is a detailed Choice Wiki on the NBN services, rather than rely on my limited knowledge.
