Applications and Configurations

IP Centrex can be used in a variety ways. The diagrams below show some examples. Click on each icon to see a larger version of the diagram as well as a description of the implementation. These diagrams are for demonstrative purposes only and do not show the full range of IP Centrex configurations. For example, it is possible to combine elements from different diagrams together to create other configurations. Also, for simplicity, these diagrams show only the Class 5 switch approach to IP Centrex. Comparable configurations are possible for Softswitch-based IP Centrex.

Customer Introducing IP Centrex into an Existing Centrex Group	Centrex Group Completely Converted to IP Centrex Using IP Phones
Centrex Group Completely Converted to IP Centrex Using Legacy Station Equipment	Multilocation Centrex Combining Main Office and Branch Office into One Centrex Group

Multilocation Centrex Combining Main Office and Telecommuters' Homes into One Centrex Group