You can find the MAC address on the back of your Cisco phone:
5.0 - Updated on 12/07/23 by Gangloff (ADM), Christine
4.0 - Updated on 12/06/23 by Roth, Walter
3.0 - Updated on 09/13/23 by Roth, Walter
2.0 - Updated on 12/15/22 by Roth, Walter
1.0 - Authored on 05/18/21 by Roth, Walter
You can find the MAC address on the back of your Cisco phone: