Basic Call Features
 
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  Phone (default): DND is effective for the phone system. 
  Custom: DND can be configured for each or all accounts. 
You can receive incoming calls from authorized numbers when DND is enabled. 
To configure the DND mode via web user interface: 
1.  Click on Features->Forward & DND. 
2.  In the DND block, mark the desired radio box in the Mode field. 
 
3.  Click Confirm to accept the change. 
Note 
To activate DND in phone mode: 
1.  Press the DND soft key when the phone is idle. 
The  icon on the idle screen indicates that DND is enabled. 
   
DND mode is configurable via web user interface only.