Method of notifying the state of received terminal to other caller

PURPOSE: A method for informing of a state in a mobile communication terminal is provided to inform a caller of a state of a receiving terminal, in order that the caller previously understands the state of the receiving terminal before making a call, thereby reducing an unnecessary call. CONSTITUTION: When a terminal 1(100-1) changes a self terminal state, state changing information is transmitted to a base station controller. The base station controller retrieves information stored in a location register(130), and retrieves subscribers included in a group of the terminal 1(100-1). The base station controller transmits the state changing information of the terminal 1(100-1) to terminals 2, 3, and 4(100-2,100-3,100-4) of the subscribers included in the group from the location register(130). When the state changing information is transmitted, a short message is used.