| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a communication system capable of notifying reason of power-off. <P>SOLUTION: When a portable terminal detects input of a power-off instruction, it activates a timer for counting until a preset time, and outputs a power-off reason selection screen on a display, requesting input of the reason of the power-off out of a plurality of reasons. When it receives any input out of the plurality of reasons displayed on the power-off reason selection screen before the timer reaches the preset time, it transmits power-off reason information showing the reason to a base station. In controlling an incoming call to the portable terminal from another terminal, a call controller transmits power-off reason notification information corresponding to the power-off reason information to the portable terminal making the call, when the power of the called destination is off. <P>COPYRIGHT: (C)2012,JPO&INPIT |
