The ARC currently has one approach to market (ATM) published on AusTender website at the moment:

Category 45111900 - Phone and video conference equipment and hardware and controllers
Close Date & Time 5-Nov-2018 2:00 pm (ACT Local Time) 
Location ACT, Canberra
ATM Type Request for Tender
APP Reference ATM84

The ARC’s objective is to replace their existing telephony and unified messaging systems, currently comprised of an Alcatel Lucent PABX and handsets with Microsoft Lync Server and Skype for Business client.

The required outcomes of the project are the provision of a state-of-the-art UC and telephony solution, hosted largely or entirely in the cloud.