That's the primary point of the feature hence the name. As far as the finer points, here are the DND options for a user:
Do Not Disturb (DND) feature provides the following options:
•
Call Reject—This option specifies that no incoming call information gets presented to the user. Depending on how you configure the DND Incoming Call Alert parameter, the phone may play a beep or display a flash notification of the call.
•Ringer Off—This option turns off the ringer, but incoming call information gets presented to the device, so that the user can accept the call.
Users can configure DND directly from their Cisco Unified IP Phone or from the Cisco Unified CM User Options.
There are also other incoming alert options as follows:
DND incoming call alert settings determine how the incoming call alert gets presented to the user when DND Ringer Off or DND Call Reject is enabled. The following options are available:
•None—This option specifies that the DND Incoming Call Alert setting from the Common Phone Profile window will get used for this device.
•Disable—This option disables both beep and flash notification of a call but for the DND Ringer Off option, incoming call information still gets displayed. For the DND Call Reject option, no call alerts display and no information gets sent to the device.
•Beep Only—For an incoming call, this option causes the phone to play a beep tone only.
•Flash Only—For an incoming call, this option causes the phone to display a flash alert.
So, you're not really missing anything - at a high-level, DND is a way to avoid being "disturbed" or alerted when an incoming call rings to a given phone.
Hailey
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