The Cisco MCS 7815-I2 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. Delivering the high performance and availability that today's enterprise networks demand, the server appliance is easy to deploy and highly cost-effective. It is preinstalled with an operating system and the Cisco Unified CallManager 5.0 application. Fully operational upon startup, the server appliance requires entry of just a few configuration items such as IP address and domain.