Category: Internet
Last updated: Wednesday, 5 February 2025

What are the different nbn® service classes?

In Australia, properties are connected to the nbn® network using different types of technologies based on the infrastructure and equipment that NBN Co can utilise. The different technology types include Fibre to the Premises (FTTP), Fibre to the Node/Building (FTTN/B), Fibre to the Curb (FTTC), Hybrid Fibre Coaxial (HFC), Fixed Wireless (FW) and Satellite. You can learn more about the different technology types in our FAQ

NBN Co keep track of properties’ nbn® technology type and nbn® readiness including any extra costs required and the timeframe for connection by assigning them with a service class number.  

Here are all the nbn® service classes and what they each mean:  

Understanding nbn® terminology and equipment  

 
Fibre – refers to type of nbn® technology connected by fibre optic cables which can carry data across long distances enabling speedy internet connections for homes and businesses.  

Premises Connection Device (PCD) – this is a box that is installed on the outside of a property and connects to the NCD and power supply unit for HFC or FTTP nbn® technology type.   

Network Termination Device (NTD) – is a nbn® connection box for FTTP, HFC and Fixed Wireless nbn® technology types and enables internet providers to connect properties to the nbn® network. 

Network Connection Device (NCD) – is a nbn® connection box for FTTC nbn® technology types and connected into the phone socket and a power point to connect properties to the nbn® network. 

Copper Lead In – are cables running underground used to connect FTTC technology homes to fibre at the curb. 

Jumpering – refers to the installation of a jumper wire which connects your home/building internet connection to your service provider. 

Distribution Point Unit (DPU) – exists inside a pit on the street and from the point has existing copper cabling connected to the fibre to form the final nbn® connection for FTTC technology homes. 

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