For a brief description of all the components that are available with Cisco Unified Communications, see the Cisco Unified Communications Component Overviews 
chapter in the Cisco Unified Communications System Description.
The Component Installation and Configuration Guides topic links to information that describes components that are specific to the contact center.
The Release Matrix (which includes the Software Version Matrix and the Firmware Version Matrix) lists all the components and their versions for a particular release. See Review Release Matrix.
Use Bill of Materials (BOM) for hardware and software specifications that are compatible with contact center components:
•
Hardware and System Software Specification (Bill of Materials) for Cisco Unified ICM/Unified CC Enterprise & Hosted Editions —Specifies the hardware and system software compatible with and required for Cisco Unified ICM and Cisco Unified Contact Center.
•Hardware and System Software Specification for Cisco Unified Customer Voice Portal —Provides platform hardware specifications and compatible third-party software version requirements across the major components of the Cisco Unified CVP solution.