Cisco Cisco Unified Contact Center Management Portal 8.5 Leaflet

Unified IP IVR Self-Service Calculator — A standard Erlang B calculator for determining the 
number of ports required on a self-service IVR. It has inputs for up to five port groups or separate 
IVRs.

The latest versions of these calculators and their associated user guides are available at 

The Cisco Unified CCE Resource Calculators are accessible to Cisco internal employees and Cisco 
partners. These tools are based on industry Erlang traffic models. Other Erlang traffic calculators 
available on the Web can also be used for sizing various contact center resources.

 is a snapshot of the current Standard Unified CCE Resource Calculator, followed by a 

definition of each of the input and output fields, how to use them, and how to interpret them.