| 摘要 |
PROBLEM TO BE SOLVED: To provide a portable telephone set in which lapse time of a speech is informed to a talker in a talking state. SOLUTION: A telephone set is provided with a timer section 3 that measures a lapse time of a speech, and a notice device (driver 5, and LEDs 8a, 8b, 8c) 10 that is able to inform the lapse time of the speech measured by the timer section 3 to a talker in a speech state, and the lapse time of the speech measured by the timer section 3 is informed to the talker by properly blinking/ lighting the three LEDs 8a, 8b, 8c of the notice device 10. |
