https://www.cisco.com/c/en/us/obsolete/unified-communications/cisco-iad2400-series-integrated-access-devices.html
Cisco IAD2400 Series Integrated Access Devices - Retirement Notification - Cisco
The Cisco IAD2400 Series Integrated Access Devices has been retired and is no longer supported.
cisco iad2400access devicesseriesintegratedretirement