Wintip777,
You will find the Australian AIP online at the Airservices Australia web site, it will be in there.
Don't waste your time with CASA,
If you are a pilot and flying IFR in Australian airspace, and ask CASA a question like that, you will probably cop an "on the spot" ticket, their latest in " CASA's armory of compliance and enforcement weapons" this being a quote form a “very senior officer of CASA” in a public statement.
Because you are supposed to know.
In fact there are a number of tables of ICAO ( Pans-Ops-- Procedures for air navigation services-operations) holding speeds, if you use Jep. manuals it is all in the Worldwide Text, in the "200 series pages" under the Air Traffic Control tab.
From memory, Australia is Pans-Ops 8168, Vol. 11, Edition 3. Table 1, but with some limitations for Cat A and B aircraft, that will be in the Jep. Australian Differences section. (or the AIP).
Needless to say the Australian Differences section is about 3 or 4 times as long as the next nearest ICAO differences section by page count.
Have fun ???
Tootle pip !!