Currently when you are On Call using their Cisco phone, there’s no synchronization of phone presence status with the Webex App. Your coworkers can’t detect your phone status. As a result, the coworkers don’t know whether to transfer or forward a new call to you.

With this feature, there’s synchronization of your desk phone on-call status with the Webex App, enabling your coworkers to see your desk phone status on their Webex App. When you're on an active call, your presence status changes to On Call. This status changes back to available when your call ends.

There are certain presence states that have higher priority compared to On Call. These states are Do Not Disturb, Out of Office, Presenting and In a Meeting. When your presence status is one of the above, on-hook or off-hook activity on a phone doesn’t result in your presence status changing to On Call.