We are about to install SU5 on the offline partition and make it active when it is done. I manage Uccx piece do you think it will create any problems for uccx and if it will . Where should I check its the functionality and connectivity with Cm.
UCCX only talks to the CTI Managers in your cluster. So, until those go down for the switch version you will not have disruption on UCCX. You will need to validate if the CUCM version supports your UCCX version.