wgroom wrote: » If you have a server running ESXi 5 or better, you can build a CUCM server, add a CUC server, and play around. Once you learn the basics, it is a great system to work in. There are many abilities the newer call managers have, and playing on your own system is a great way to learn. And the beauty of ESXi, as long as you take periodic snapshots, if you hose something up you can always revert back.