| 摘要 |
When electronic mail transmitting operation is performed, it is checked whether the standby mode is the digital mode. If the standby mode is not the digital mode, processing for changing the standby mode from the analog mode to the digital mode is executed. When the standby mode is changed to the digital mode, the electronic mail is transmitted through a digital channel. If the standby mode cannot be changed to the digital mode, the transmission electronic mail is stored in a memory, and message hold transmission control is executed afterward.
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