How to call in the cornet of Apple 6s's Do Not Disturb mode?

How to call in the cornet of Apple 6s's Do Not Disturb mode?

Open do not disturb mode and set the white list.

1, the Settings icon on the iPhone home screen, and then click Open.

2. Find the "Do Not Disturb Mode" option in the setting list, and click Enter.

3. In terms of time setting, set the anti-interference time according to your actual needs.

4. Click the "Allow calls from" option to enter the settings.

5. Select all contacts. When the Do Not Disturb mode is turned on, everyone will be blocked except the contacts in the address book who can make calls.