nbn™ Fixed Line services are by far the most common connections in Australia.
There are three different connection types that fall under Fixed Line services:

Fibre to the Node (FTTN)
Your service connects via traditional copper phone cable between your premises and a nbn™ node cabinet located somewhere in your street or suburb. The node is where the service is handed over to the fibre network. This type of service is also typically called VDSL. It differs from ADSL in that the actual distance the copper line travels before connecting to the node is far less than ADSL, and the vectoring technology that makes up this service offers much greater speed.

Fibre to the Building (FTTB)
Typically found in larger residential apartment complexes businesses, where nbn™ Fibre is connected to the basement or communications room. Individual apartments or units will connect to the service using the existing copper phone cabling to the basement. It works much the same way as FTTN, except the service terminates within the building not elsewhere.

Fibre to the Curb (FTTC)
A newer type of connection where nbn™ Fibre is layed in the street, but not directly connected to your home or business. Instead, a Distribution Point Unit (DPU) is installed in the telecommunications pit outside your home, which connects both the optic fibre and your copper line. An nbn™ connection box (NTD) is provided to you to connect to your existing telephone socket which powers the DPU. You simply connect your wireless router to the NTD to get online.