Hoan,
Australia doesn't have the same frequency parameters with Jordan.
In 812 you must use Jordan, not Argentina.
In 2.1.5 I don't know how frequency country you must use, ask Samsung about it. Jordan uses 2 busy tones with specific frequency in the busy tone 2.
In 5.7.1 you must configure as I said before:
Busy: 15/15/10/10
CO Busy: Busy: 15/15/10/10
why?
Because:
15 x 50ms = 750ms (For 1st tone)
10 x 50ms = 500ms (For 2nd tone)
In 5.7.4 you must configure as I said before:
Busy Tone: 730 / 780 / 730 / 780
Why?
Because:
~750 is from 730 to 780