You would use the same process and add the CA certificates from any AES servers.
Security>Certificate Management>CA Trusted Export button and you will be presented with a window that contains the installdir/keystore/cacerts
Certificates:
-Select the new CA Root Certificate via the associated tick box.
-Now click on the CA Root cert in a textual format
-Copy the entire contents of this text (including the -----BEGIN CERTIFICATE and END CERTIFICATE lines) and paste it into a filename of your choosing - a sensible choice would be the name of the CA cert
-Save this file in the ACR under installdir/keystore/cacerts (NOTE: Make sure the ownership of the .pem file is witness)
Use Links below for Importing AES CA Into ACR
ACR 12/15 Update
Windows Version
-Article ID: https://support.avaya.com/kb/ext/SOLN320077
-Doc: ACR 12_How to install AES Certificate on ACR.pdf
-Video: https://www.youtube.com/watch?v=H9c89rRh0nY
Linux Version
-Article ID: https://support.avaya.com/kb/ext/SOLN320077
-Doc: ACR 12_How to install AES Certificate on ACR.pdf
-Video: https://www.youtube.com/watch?v=RVVnwUNGg_4
-Link to an ACR Guide: https://downloads.avaya.com/css/P8/documents/101018335
ACR 10/11 Certificate Update
-Article ID: https://support.avaya.com/kb/ext/SOLN318507
-Doc: ACR 11_How to import the new Root CA to ACR 11 trust list.pdf
