McDewey

C H A P T E R 33 Extension Mobility Cross Cluster • Extension Mobility Cross Cluster Overview, on page 421 • Extension Mobility Cross Cluster Prerequisites, on page 421 • Extension Mobility Cross Cluster Configuration Task Flow, on page 422 • Extension Mobility Cross Cluster Interactions, on page 443 • Extension Mobility Cross Cluster Restrictions, on page 444 • Extension Mobility Cross Cluster Troubleshooting, on page 448 Extension Mobility Cross Cluster Overview The extension mobility cross cluster (EMCC) feature provides users with the same functionality as extension mobility, but also allows them to move from one cluster (the home cluster) and log in to a temporary phone on another remote cluster (the visiting cluster). From there, they can access their phone settings from any location as if they were using an IP Phone at the home office. Ensure that the remote EMCC cluster support the minimum TLS version configured on your home cluster. Note Extension Mobility Cross Cluster Prerequisites • Other call-control entities that support and use the extension mobility cross cluster (EMCC) configuration; for example, other Cisco Unified Communications Manager clusters, EMCC intercluster service profiles, and EMCC remote cluster services • Clusters that are set to nonsecure or mixed mode. See Extension Mobility Cross Cluster and Security Mode for Different Cluster Versions, on page 446 for more information. • Supported phones in secure or nonsecure mode Feature Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs 421