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Modems that are incompatible with the nbn® FTTN and FTTB networks

Some modems may cause problems with your connection

Some commonly used modems don’t fully support nbn’s requirements and may cause problems with your network connection.


The Fibre to the Node (FTTN) and Fibre to the Building (FTTB) networks use VDSL2 technology. While many modems include this technology, a number of them don’t fully meet nbn network requirements.

This means that while some modems can initially connect to the network, there may be features missing that are necessary for your internet connection to remain stable.

If your modem does not support all the requirements, your connection may be affected in the following ways:

  • Your connection may not run at its full speed or may drop out.
  • nbn may block your modem from connecting to the network if it’s interfering with other users’ services.
  • nbn may not accept fault reports for your service until the modem is changed and compatible.

How to be sure your modem will work with the nbn network

Your phone or internet provider can advise if your existing modem is causing any issues with your service.


Frequently Asked Questions