| 摘要 |
PURPOSE:To announce the presence of an unreceived message to the owner of a pager although a call from a call request person already has come. CONSTITUTION:At a radio call change 3, a serial number application processing part 4 is provided to apply serial numbers to messages. A storage part 8 of a pager 7 stores the serial numbers of messages transmitted from the serial number processing part 4. A control part 9 compares a serial number N of the message already received and stored in the storage part 8 with the serial number of the message received this time. When the number of the message received this time is N+1, normality is displayed at a display part 10 and when it is not N+1, abnormality is displayed. |
