CUCM administrators are typically responsible for installing, configuring, and maintaining Cisco Unified Communications solutions, including managing user accounts, call routing, voicemail, and integration with other communication platforms. They often monitor system performance, perform troubleshooting, and coordinate upgrades or patches to ensure optimal uptime. Collaboration is frequent with network engineers, IT support teams, and end-users to resolve issues or deploy new features. This role combines technical hands-on tasks with cross-team communication to ensure seamless enterprise-wide communication services.