Skype for Business is predominantly used for JCU internal communicationsis (video/messaging etc) but is not inter operating with JCU videoconference room systems.
On the 30th of April 2018, JCU launched a new Skype for Business feature - the ability to contact personal Skype account users (Skype Home) and Skype for Business (SfB) users in other organizations outside JCU - this feature is called Federation.
This means you will only need one versoin of Skype of JCU:
You can now use Skype for Business to contact:
JCU staff can also request federation with additional organizations, such as government bodies and business partners by logging a request for federation via Service Now.