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Updated:February 21, 2020
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The Do Not Disturb (DND) feature allows you to bar incoming calls whenever you are on a meeting or on another call. On DND mode, incoming calls may be redirected to another number, the voice mailbox, or disconnected, depending on the call controller you use.
This article aims to show you some possible ways to enable or disable DND.
MPP phones require either service from an Internet Telephony Service Provider (ITSP) or an IP Private Branch Exchange (PBX) call control server. WebEx Calling, Ring Central, and Verizon are examples of an ITSP. Some examples of IP PBX services that work with Cisco MPP phones include, Asterisk, Centile, and Metaswitch platforms.
These ITSP and IP PBX call controllers are a separate system in which the phone and the call controller communicate with each other to provide services such as call park and voicemail. Since the MPP phones do not use a specific call controller, access and procedures vary.
Each call controller can follow different procedures, so we can't tell you exactly how yours will work. For information and help with your specific voicemail commands, refer to the help sites from the provider you chose. If you have an administrator, you can contact them for details and possible training.
Possible Asterisk Commands
In Asterisk, Do Not Disturb is usually controlled by dialing 78 to turn on the Do Not Disturb mode on the phone. To turn the Do Not Disturb mode off, 79 is usually the default.
Through the Web-based Utility
Step 1. Access the web-based utility of your IP Phone then choose Admin Login > advanced.
Step 2. Choose Voice > Phone.
Step 3. Under Supplementary Services, choose Yes from the DND Serv drop-down list to enable DND, or No to disable DND.
Note: In this example, Yes is chosen.
Step 4. Click Submit All Changes.
You should now have configured DND through the web-based utility of the phone.
Through the GUI of the Phone
Step 1. Press the Settings button on the phone.
Step 2. Choose User Preferences using the Navigation Cluster button.
Step 3. Choose Call Preferences.
Step 4. Choose Do not disturb.
Step 5. Press the left or right arrows of the Navigation Cluster button to enable or disable DND.
Note: In this example, On is chosen.
Step 6. Press the Set softkey.
You should now have configured DND through the GUI of the phone.
Through the Home Page of the Phone
Step 1. Press the Navigation Cluster button until the DND softkey is displayed.
Step 2. Press the DND softkey.
You should now have successfully configured DND through the home page of your phone.