Avaya Contact Center – Extended Capacity supports numbers up to 16 digits for endpoint extensions, agent and VDN IDs, and up to 24 digits for external numbers. The contact center also supports dialing for extensions that are in the same location as the server and for extensions that are spread across several locations. Avaya Contact Center – Extended Capacity supports dial prefixes that agents can dial before an extension. Dial prefixes prevent conflicts between extensions and numbers used for dialing within an agent profile.

The administrator can configure dial plan for different call types on the Configuration Server web portal.

For more information about configuring dial plan analysis and call types, see the dial plan configuration section in Administering Avaya Contact Center – Extended Capacity.