46. DESCENT FROM CONTROLLED AIRSPACE
46.1 Before descending from controlled into Class G airspace and before separation with any aircraft operating near the base of controlled airspace can be compromised, the pilot in command of an IFR flight must report position, level, intentions and estimate for next position/destination to the ATS unit providing services in Class G airspace. If the report is made using HF radio, a broadcast must be made on the appropriate area VHF frequency.
Is this suggesting all aircraft must make a Qantaslink style Top Of Descent broadcast to all stations? Is receiving traffic information and providing centre with an ETA not sufficient?