Hello, We’re using Webex Calling. After an employee left, their user account was deleted from Azure. Now, when I try to reassign the device Cisco  8851 to another user, I get an error saying the MAC address is already defined — but there’s no such ...

Hello , We are experiencing an issue with our Cisco IP Phone 7811 devices, where the phones are randomly initiating a line  without any user interaction. The events occur while no one is near the device, and the handset remains on the cradle. my CUCM...

Hello, I am experiencing an issue with a third-party device (Yealink W70B) registered to our CUCM (version 14.0.1). The device intermittently loses its registration with the CUCM . The temporary solution we have found is to either switch the device t...

Hello , Recently, I started using Webex Calling, including making and receiving calls from a MPP physical phone. When I try to dial from the app webex, I receive an error message: ‘Webex Calling Invalid Video or Meeting Address. Please check the add...