3. After accessing the device configuration settings, select the Global option, which is the Seventh section on the left side.
4. In the Global page, there is a section called DND (Do Not Disturb) that contains the following sub-options:
- Authorized Number: Specify the number authorized to manage DND settings. (Example: +1234567890)
- OnCode: Set the code to activate DND. *(Example: 78)
- OffCode: Set the code to deactivate DND. *(Example: 79)
5. After entering all the required data in the DND section, click on the Save button to apply the changes. You can now successfully use the DND option.