| 摘要 |
PROBLEM TO BE SOLVED: To control receiver volume while suppressing a trouble to call for the user.SOLUTION: Receiver volume corresponding to other portable terminal making a call with a portable terminal is determined (step S201 through step S208). When call is started using this receiver volume, and the voice of a user emitted for the portable terminal satisfies predetermined conditions during call (step S210), call is continued by increasing the receiver volume (step S211), and the receiver volume is decreased when the portable terminal is separated from the ear. |
