Cisco Cisco IP Contact Center Release 4.6.1 Design Guide

Cisco Unified CCE is a distributed solution that uses numerous hardware and software components, and 
it is important to design each system in a way that eliminates any single point of failure or that at least 
addresses potential failures in a way that will impact the fewest resources in the call center. The type and 
number of resources impacted will depend on how stringent your requirements are and which design 
characteristics you choose for the various Unified CCE components, including the network 
infrastructure. A good Unified CCE design will be tolerant of most failures (defined later in this section), 
but not all failures can be made transparent.

Cisco Unified CCE is a solution designed for mission-critical call centers. The success of any Unified 
CCE deployment requires a team with experience in data and voice internetworking, system 
administration, and Unified CCE application design and configuration.

Simplex deployments are allowed for demo, laboratory, and non-production deployments. However, all 
production deployments must be deployed with redundancy.

Before implementing Unified CCE, use careful preparation and design planning to avoid costly upgrades 
or maintenance later in the deployment cycle. Always design for the worst possible failure scenario, with 
future scalability in mind for all Unified CCE sites.

In summary, plan ahead and follow all the design guidelines and recommendations presented in this 
guide and in the Cisco Unified Communications Solution Reference Network Design (SRND) guide, 
available at 

For assistance in planning and designing your Unified CCE solution, consult your Cisco or certified 
Partner Systems Engineer (SE).

 shows a high-level design for a fault-tolerant Unified CCE single-site deployment.