| Change Control Event | Informational Change – Remove migration certificates from the Cisco CallManager CCH server as they are no longer required. No downtime expected. | Change Control Event | Informational Change – Remove migration certificates from the Cisco CallManager CCH server as they are no longer required. No downtime expected.CHG0069591 2023-03-14 20:00:00 – 2023-03-14 20:01:00Informational Change – Remove migration certificates from the Cisco CallManager CCH server as they are no longer required. No downtime expected.