There is a gap in Advanced Call Manager: AFAIK, this "must-have" utility doesn't allow to trigger automatic shift to specified ring modes according to GSM cell location and/or to clock. Example: I would like my phone to go automatically to "Silent" mode after 10 pm (or when at church or at theatre and so on), or to "Outdoor" mode when in my usual (noisy) shopping centre, etc.
Is there any other software allowing this?