Zoom Rooms as a phone, what are the rates?

So I just noticed recently that our Zoom Room controller could make outgoing calls (we also have Zoom Phones setup). I looked at the dashboard in the Phones System Management->Users & Rooms->Zoom Rooms and the package assigned to it is "Zoom Room Common Area" which says we can do extension to extension calling, metered outbound calls and basic phone features. But I can't google-foo my way to find what the outgoing calling rate is for this package. Does anyone know the link? BTW I am in Australia so AUD please.

Regards

Damien