从属性上讲，拨号可以保证相对安全性，因为特定的电话线可以确认用户的身份。
In the subordinate says, the digit dialing may guarantee the relative security, because the specific telephone line may confirm the user the status.
如果“按长途拨号”复选框可用，请确认已选中此复选框。
If the Dial as long distance check box is available, make sure it is selected.
如果“按长途拨号”复选框可用，请确认已选中此复选框。
If the Dial as long distance check box is available, make sure it is selected.
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