The Cisco Media Convergence Server 7815-I1 (MCS-7815-I1) Unified CallManager Appliance is an entry-level appliance for Cisco Unified CallManager 5.0 and is an integral part of a complete, scalable architecture for a new generation of high-quality IP communications solutions for enterprise data networks. It delivers the high performance and availability that today's enterprise networks demand and represents a turnkey solution that is easy to deploy and highly cost-effective. The server appliance is preinstalled with an operating system and the Cisco Unified CallManager 5.0 application. The server appliance is fully operational upon startup, requiring entry of just a few configuration items such as IP address and domain.