NSW Australia has 4 fire comms centers

http://solitary.rfsa.org.au/?Managing_Emergency_Calls

public dials 000 - operator then forwards caller to 1 of 4 fire
dispatch centers - the fire dispatch center then pages either the
closest available RFS station or the closest aailable FRNSW station
(or both)

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"The district Firecom is operated via the NSWRFS State Operations in
Sydney and the district Duty Officer (on call 24/7) will monitor the
incident via radio". - not exactly sure what that means - maybe that
means that the RFS has all of their radio dispatchers based in Sydney
- maybe by "district Firecom" they mean local fire radio channel - RFS
might have 20 regional firecoms also (meaning 20 small dispatch
centers)

MAYBE

all initial paging is done by the 4 centers - and then followup comms
are done by someone else

the radio info at radioreference seems to show that all NSW fire units
(or 99% of them) use UHF - both simplex and repeater - TRS and non TRS