Unified Communications solution that covers the whole range of IP communications.
There are four call-processing deployment models. These models differ based on whether call processing is centralized or distributed and whether the cluster is located within a single site or dispersed across multiple sites.
Deploying Cisco Unified CallManager in a Cisco IP telephony solution entails selecting the Cisco MCS hardware platform, installing the Cisco Unified CallManager software, and performing postinstallation procedures.