Description
In this example, a company has two offices which are located in different wire centers. With IP Centrex, both offices can be part of
the same Centrex group. This means that all the users can use the same abbreviated dial plan to call each other, regardless of which
office they are in. Calls between the main office and branch office do not incur toll charges. (Without IP Centrex, these would be toll
calls.) Note that PCs can be connected to the same LAN as the customer gateway, however, they are not illustrated in this diagram.