iOccupied is a tweak released during this day in Cydia, and with its help you can set your iDevice to automatically respond with a message every time you cannot answer a Facetime or voice call. The tweak has a menu in the Settings application, and there you can set the personalized message that is sent to the caller, as well as the time period that must pass from rejecting the call to sending the message. In the iOS 6 Apple has implemented a similar system that allows you to send a message when you cannot answer the phone, but that system must be activated manually and does not work automatically like iOccupied.
Customize your own auto-responses when you are unavailable. This settings plugin will disconnect phone and facetime calls and return an automated response as often as every 2, 5, 10 minutes after an initial response is received.
iOccupied is available for $3.99 in Cydia's BigBoss repo.
