Yes the CareAlert Smart Dialler can be connected to and used through the NBN (National Broadband Network). Many 100's are already in use with NBN. It is important to let the NBN installers know that you have a CareAlert Smart Dialler Emergency pendant system so that they can provide without charge a longer battery backup unit. In their terms connection to a 'UNI-V and NBN Co's battery backup unit' Please click on the following link to read NBN's statement in regard to Emergency Systems
http://www.nbnco.com.au/assets/documents/security-and-medical-alarms-on-the-nbn.pdf