/mcpSupported Versions Unified Communications Manager and the IM and Presence Service nodes in the same cluster must be running the supported builds as mentioned in the Release Notes for Cisco Unified Communications Manager and the IM and Presence Service. Version Mismatches This release offers two main deployment options for this release of Unified Communications Manager and the IM and Presence Service: • Standard Deployments of IM and Presence Service—Both Unified Communications Manager and the IM and Presence Service must be running the supported versions for your deployment. A version mismatch is not supported. • Centralized Deployments of IM and Presence Service—If you have the Centralized Deployment option configured on the IM and Presence Service, then within the IM and Presence Service central cluster, both the Unified Communications Manager instance and the IM and Presence Service must be running the same version. However, the telephony cluster that the central cluster connects to does not have to be running the same version. The Centralized IM and Presence Service cluster requires a Unified CM publisher node, for a total of seven servers in the cluster: three IM and Presence Service sub-cluster pairs (six servers) + the Unified CM publisher node. Note Software Restrictions You cannot install or use third-party or Windows-based software applications. The system can upload and process only software that Cisco Systems provides and digitally signs. For more information, see the 'Operating System and Security Hardening' chapter in the Security Guide for Cisco Unified Communications Manager. You must perform all software installations and upgrades using Cisco Unified Communications Operating System Administration. For information about software compatibility for Unified Communications Manager and IM and Presence Service, see the Compatibility Matrix for Cisco Unified Communications Manager and the IM and Presence Service. Username and Password Requirements During the installation, you must specify the following user names and passwords: • Administrator Account user name and password • Application User name and password • Security password Installation Guide for Cisco Unified Communications Manager and the IM and Presence Service, Release 15 and SUs 20 Planning the Installation Supported Versions