I am not sure but I am looking for an answer. Client has a standard VMware Callmanager install, with exsi. They have a vsphere install that is 5.0U1, can they intergrate the EXSI server into it ? I have looked at http://docwiki.cisco.com/wiki/Unified_Communications_VMWare_Requirements , they do not mention 5.0u1 I say yes ? Leslie