View these downloadable videos for general training on planning Cisco Unified IP telephony systems.
•
Unified Communications System Overview 
This video describes the system release approach. It presents the system components at a high level; describes system bundles, pricing, and services; and outlines the deployment models and migration strategies.
•Unified Communications System Architecture
This video describes the purposes and uses of the system architecture components. It details the SRND-recommended deployment models, and describes the changes to the deployment models for Cisco Unified CallManager and Cisco Unity. It also covers security and network management recommendations.
For more Cisco Unified Communications training videos, see the Training Library.