/mcpExtension Mobility Cross Cluster Interactions Table 37: Extension Mobility Cross Cluster Interactions Interaction Feature The default maximum audio bit-rate for EMCC login device is set to 8 kbps (G.729). Audio • The home cluster is unaware of visiting cluster locations and regions. • The system cannot apply Cisco Unified Communications Manager locations and regions across the cluster boundaries. • RSVP agent-based CAC uses RSVP agents in the visiting cluster. Call Admission Control (CAC) EMCC supports call forwarding. Call Forwarding User authentication takes place across clusters. Cisco Extension Mobility login and logout Examples include RSVP agent, TRP, music on mold (MOH), MTP, transcoder, and conference bridge. Media resources are local to the visiting phone (other than RSVP agents). Media resources for the visiting phone • E911 calls are routed to the local gateways of the PSTN. • Local calls are routed to the local gateways of the PSTN. • Calls terminating to local route groups route to local gateways in the visiting cluster. PSTN access for the visiting phone Example restriction: Intercom configuration specifies configuration to a static device, so EMCC does not support the intercom feature. Other call features and services • Cross-cluster security is provided by default. • Cisco Unified IP Phones with secure and nonsecure phone security profiles are supported. Security Feature Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs 443 Receiving Calls Extension Mobility Cross Cluster Interactions