The Cisco MCS 7825-I2 Unified CallManager Appliance is an integral part of a complete, scalable architecture for a new generation of high-quality IP Communications solutions that operate on enterprise data networks. This powerful platform is a solution that is easy to deploy and highly cost-effective, and it delivers the high performance and availability that today's enterprise networks demand. The server appliance is preinstalled with an operating system and the Cisco Unified CallManager application. It is fully operational upon startup, requiring entry of just a few configuration items such as IP address and domain.