From Melon :
If you are busy, constantly in important meetings and discussions annd your mobile always ringing at a bad moment then all you need to be in control is the Advanced Call Manager. It will handle the incoming calls for you and personalize your approach to the callers - play an instant busy tone or drop the call, send a kind SMS, mute the ringer or pick up and hang up the phone. ACM handles your incoming calls with a personalized approach to different callers - it accepts, rejects, sends a personalized SMS, mutes the ringer or instantly picks up and then hangs up. You can easily save different profiles and schedule them according to time or location.
Version 2.71 features full support for BlackBerry 6 devices (BlackBerry Torch 9800, Bold 9780, Style 9670). Added display indicator. New scheduling periods added: weekly (choose day of the week), workdays, weekends. New options for creating lists: import contacts from other existing ACM lists or import BlackBerry contact groups. Improved user interface and navigation. Improvements in call capturing. Fixed issue with call-log import.