| 摘要 |
In a digital cordless telephone set as a subsidiary unit, when both a radio wave from a radio base station connected to a public line and a radio wave from a master unit connected to a private line can be received, a sensor detects whether the subsidiary unit is placed on a charger. If the subsidiary unit is placed on the charger, the simultaneous wait mode is set while assigning the private line to a priority system and the public line to a nonpriority system. If the subsidiary unit is not placed on the charger, the simultaneous wait mode is set while assigning the public line to the priority system and the private line to the nonpriority system. In any case, the incoming call wait period of the nonpriority system is set to be longer than the normal period. With this arrangement, the frequency of turning on the main power supply of the subsidiary unit can be decreased to minimize power consumption in the incoming call wait mode. |
