Mobile telephone interactive call disposition system

An interactive call disposition system that may operate on a mobile telephone independently of any remote or network-based information or functionality is provided. Upon receiving an incoming telephone call, the interactive call disposition system may automatically dispose of the call (e.g., call forwarding, voicemail, etc.), or the interactive call disposition system may conduct an interactive exchange with the calling party via an interactive voice response (IVR) system or via dual-tone, multi-frequency (DTMF) key input from the calling party. The interactive exchange between the interactive call disposition system and the calling party may accomplish disposition of the call based on calling party and called party information, such as calendar data, free/busy data, contacts information, and the like.