If you are getting an NBN Fiber-to-the-Premises (FTTP) service, you need a router that works with Ethernet. If your NBN service is Fiber-to-the-Basement (FTTB) or Fiber-to-the-Node (FTTN), you need a VDSL2-capable router.
You can purchase NBN-ready modems from Internode with two options. The first is a TG-789 at $89 and the second is a Fritz!Box 7490 at $249. The first has a two-year fast replacement warranty while the second has a five-year fast replacement warranty.
NodePhone VoIP comes with no setup fees or monthly rental.