Hi, it performs the same role as an ICCU (Fire Control Unit). Ambulance services across England (and I’m sure the rest of the UK) have at least 1 to my knowledge and are just an alternate version for realism which can be based at any amb or HART station
*EDIT* didn’t realise this post was for Aus, but presumably it still more or less applies as a “duplicate of fire service control unit” for purchase in amb stations.