We have 5 BE6K (EOS) distributed around 4 location running CUCM 11.5 (cluster consists of 8 nodes + 2 CUC) and we bought a another BE7K for upgrading to version 14. What is the preferred to do this upgrade:
1- upgrade the CUCM cluster through PCD.
2- Build new cluster from scratch
although have nearly 1500 phone running now. and our cluster has integrations with Zoom for recording and Imagicle for reporting.
and if anyone has project plan for each of them, could he share it?