What is "basic training" vs "advanced training" / how long does it take to become a pediatrician in Aus?

Hi Guys!

I wanted to inquire about the difference between "basic training" vs "advanced training" & how that works in Australia? For example, I was interested in becoming a general pediatrician and according to RACP it takes 6 years -- 3 years of "basic training" & another 3 years of "advanced training": Paediatrics & Child Health

However, is "advanced training" equivalent to what North America considers...

What is "basic training" vs "advanced training" / how long does it take to become a pediatrician in Aus?