YES you can have different lines have a different AA Greetings but only 4. YES you can have different lines unswered by dedicated AA after different number of rings. Yes you can have as many as 99 sub-manues and have selectors codes act differently in each AA. You can dial from sub-manue directly without dialing *8 like it was required in VS VM. YES you can have 8 different rings Patterns but choices are poor. Also you can have each line goes directly to personal mail box if there is no Answer and leave a Message or dial personal Operator assigned to that owner.