Upon completing this chapter, you will have an understanding of the CUCM architecture and be able to meet the following objectives:
■ Describe the components of a Cisco Unified Communications solution and each component's functionality.
■ Describe the architecture and role of CUCM.
■ Describe the hardware requirements for CUCM.
■ Describe the characteristics of the CUCM operating system.
■ Describe the characteristics of the CUCM database and how it provides redundancy.
■ Describe the licensing model of CUCM.
■ Describe how to calculate, verify, and add license units to CUCM.
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