From Oz AIP GEN.........
3.3.7.2 In Class G airspace, a traffic information service is provided to
IFR flights about other conflicting IFR and observed VFR flights
except:
a. An IFR flight reporting taxiing or airborne at a non-controlled
aerodrome will be advised of conflicting IFR traffic that is not
on the CTAF; and
b. An IFR flight inbound to a non-controlled aerodrome will be
advised of conflicting IFR traffic until the pilot reports
changing to the CTAF.