The Cisco MCS 7845-H2 Media Convergence Server is a high-availability server platform for Cisco Unified Communications solutions. The Cisco MCS 7845-H2 is an integral part of a complete, scalable architecture for a new generation of high-quality IP voice solutions that run on enterprise data networks. It delivers the high performance and availability demanded by today's enterprise networks and represents an innovative solution that is easy to deploy and highly cost-effective. At only 2 rack units (2RU) high, the Cisco MCS 7845-H2 packs tremendous power in a low-profile chassis that minimizes rack space. The Cisco MCS 7845-H2 runs a variety of Cisco Unified Communications applications, such as Cisco Unified CallManager.This product is intended for use with Cisco Unity Unified Messaging (on-box voicemail only).