VVX D230 Wireless Handset User Guide  Using Your VVX D230 DECT IP Phone
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3 Choose a line, then press Select.
The wireless handset accesses the message center and you can listen to new voicemail messages.
Enable Do Not Disturb
If you don’t want any disturbance, enable Do Not Disturb (DND) to prevent the handset from ringing for 
incoming calls.
To enable DND:
1 Press Menu, then go to DND.
2 Do one of the following:
 To enable DND on all lines, choose Select all.
 Select the lines you want to enable DND for.
3 Press OK.
Disable Do Not Disturb
You can disable DND at any time from the wireless handset. 
To disable DND:
1 Press Menu, then select DND.
2 Deselect the lines you want to disable DND for, then press OK.