Document resets page number on heading1. TOC entries for level 1 can be created in the form 1-1, 2-1 etc. Other TOC levels cannot be made to show chapter number in the page
TOC looks something as follows:
Big title 1-1
subpiece -12
Big title 2-1
subpiece -5
Big title 3-1
subpiece -3
subsub -5
Those subpieces should be things like 1-12, 2-5, 3-3 and 3-5.