The ADHS course has theory and structure similarities to nursing training but with an emphasis on Emergency and Pre hospital care. The current Australian course model had its basis in Victoria in the late 70's and has been adopted throughout Australia after some further development. At this point in time there is reciprocity between BLS or Qualified Ambulance Officers.
Some areas have additional skills for non paramedics but they are on a local basis.
Paramedic training and skills vary widely between states. One state has advanced care officers who have some invasive skills but cannot intubate. Another State has an all ALS service that has just started an intubation program but has had IV drug administration for many years. Yet another state has two levels of ALS, some with limited drugs, others with all the usual first line drugs. I am in Melbourne where we have a paramedic program that is available to selected officers who have at least 2 years post graduate experiance.