The system administrator can install Avaya Contact Center – Extended Capacity in the Simplex, local High Availability (local HA), or geo-redundant High Availability (geo-redundant HA) environments.

In the Simplex deployment, the contact center operates in one data center that contains one Application Center, one Configuration Server, and one Routing Core Server. The contact center does not provide server High Availability and cannot operate in case of server failure or maintenance procedures.

The following diagram provides an overview of the Simplex deployment architecture:

In the local HA deployment, the contact center operates in one data center that contains one Application Center, one Configuration Server, and two Routing Core Servers.

The solution provides high availability for Routing Core Server instances. The contact center does not support high availability or disaster recovery for Routing Core Configuration Server, Next Generation Management, and Call Management System.

The following diagram provides an overview of the local HA deployment architecture:

The contact center operates in two geographically separate data centers. Each data center contains one Application Center, one Configuration Server, and two Routing Core Servers.

With Layer 2 networking, the contact center supports high availability for Routing Core Server, Configuration Server, Next Generation Management, and Call Management System. In case of the primary data center failure, the contact center fails over to the secondary data center and preserves all active calls and agent states.

The following diagrams provide an overview of the geo-redundant HA deployment architecture with layer 2 networking:

The contact center operates in two geographically separate data centers. Each data center contains one Application Center, two Configuration Server and two Routing Core Server instances.

Without Layer 2 networking, each data center contains an independent set of contact center servers and supports disaster recovery. In case of the primary data center failure, the Avaya Contact Center – Extended Capacity recovers contact center operations in the secondary data center and does not preserve active calls and agent states. The contact center supports high availability for Configuration Server and Routing Core Server instances within each data center.

The following diagrams provide an overview of the geo-redundant HA deployment architecture without layer 2 networking: