Avaya SBCs are deployed back-to-back in a multiple Session Manager remote worker solution. In the solution, one Avaya SBC is deployed in the DMZ network and another Avaya SBC in the CORE network.

You can manage both Avaya SBCs by using a single EMS web console or different EMS web consoles.

Ideally, there must be a firewall between the CORE and DMZ network, but the firewall is not mandatory for the Avaya SBC deployment.

In the following diagram, the core and DMZ Avaya SBCs have been deployed in HA mode.