Of course it is, BUT, TCAS works though the SSR transponder. What you may get, with a different version of ADSB, according to ASA, " ATC might not be able to
SEE your aircraft, or may confuse it with another. You could also affect other systems such as
TCAS" The word
SEE is directly from ASA.
While Version 2 is 'accepted' by ASA, not all aircraft will be able to see you on TCAS. For ATC to be able to
SEE you, you must affect certain settings as noted below. The TCAS may show an aircraft, but without the ID, or may not even show on the TCAS at all.
From ASA:
While it is 'accepted', when running ADSB V1/V2, you must insure that your system has the following setting: Notice that while it states to use this, it also indicates no integrity, thus the TCAS and ATC will have issues. Long story short, for ADSB V1 and V2 aircraft, you must downgrade your system in OZ for ATC and other ADSB V0 aircraft. (which ADSB V0 has been mandated, not V2 as in the US, and the rest of the world)
I cannot be bothered reading that whole document
Looks like it is time for you to start reading up on some documents.