For nbn services , nbn co supplies a connection box that plugs into the wall socket in your house. In order for your service to work, the connection box must be turned on and connected to a modem.
 
There are currently two connection box models: CM8200 and CM820 (see images below).



Between July and December 2018 nbn co will contact a small group of selected customers, by letter and phone, to let them know they’d like to install an upgraded nbn connection box at their premises.