For capacity planning purposes, a network administrator must provide a report to management that displays the number of phones registered per server. Where can the administrator obtain this…

The Cisco Serviceability Reporter service automatically generates and stores daily reports in the Serviceability Reports Archive, accessible under Cisco Unified Serviceability > Tools. These reports include a 'Devices in Cluster' report that shows the number of phones registered to each node, making it the correct tool for capacity planning around per-server phone registration counts.

Cisco Unified Operating System Administration is used for OS-level tasks such as software upgrades and certificate management, and does not contain telephony device registration reports.

Cisco Unified CM Administration does not have a Tools > System Reports navigation path and is not used for generating device registration capacity reports.

Cisco Unified Reporting provides cluster-wide configuration summary reports but does not surface per-server registered phone counts from the Serviceability Reporter service.