When you need time to focus and don’t want any incoming call notifications to disturb you, you need not enable Do Not Disturb (DND) on each of your Webex Calling registered clients. When you enable DND on the Webex App, the state is automatically synchronized to your desk phone. Similarly, when you enable it on your desk phone, the state automatically synchronizes with your Webex App.

When you set DND status on Webex Calling registered clients, you don’t get a notification of the incoming call. The DND status on your desk phone is implicitly turned on when you’re present in a Webex Meeting. On configuring the Call forward busy setting, the calls go directly to voicemail. If the voicemail isn’t configured, the caller hears a busy signal.

On disabling the DND sync toggle, the iOS devices are impacted and the calls ring on the device even when DND is set.

To enable DND on Webex App and Multiplatform Phone (MPP), see: Webex App | Let people know you're busy