Avaya recommends that you migrate data from your previous contact center in phases. In each phase, you can migrate a certain number of endpoints or agents. Avaya Contact Center – Extended Capacity also uploads all objects associated with endpoints and agents to migrate in a phase. Migration of the contact center objects in phases takes less time and affects only the contact center objects that you migrate. If migration of a phase fails, you can roll back the migration phase.

If you migrate contact center objects in phases, you can configure Avaya Contact Center – Extended Capacity so that the migrated agents can make calls to and receive calls from agents in your previous contact center. You must also ensure that your dial plan can process incoming and outgoing calls for the migrated entities correctly. For more information about configuring dial plan and network, see the dial plan and network configuration sections in Administering Avaya Contact Center – Extended Capacity.