View these videos for general training on planning Cisco Unified Communications systems:
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Cisco 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.
•Cisco Unified Communications System Architecture
These videos describe the purposes and uses of the system architecture components. They detail the SRND-recommended deployment models and describe the changes to the deployment models for Cisco Unified CallManager and Cisco Unity. They also cover security and network management recommendations.
–Part 1: Unified Communications Architecture
–Part 2: Contact Center Architecture
For more Cisco Unified Communications training videos, see the Training Library.