⟩ Did mobile moves from cell DCH to Cell FACH State if so What information will pass between Cell FACH and Cell Dch states?
yes it is possible to move from cell Fach to cell Dch ,
when the mobile have low rate of data flow then it will be in
Cell Fach mode if it wants to transfer of large amount of
internet data and wants to move on to voice call then the
mobile will pass the information from cell Fach to Cell Dch.