Avaya SBC provides security to SIP-based Unified Communications (UC) networks. Avaya SBC is available in two versions: Standard Services and Advanced Services. Either version can reside on supported servers. For information about supported servers, see Deploying Avaya Session Border Controller on a Hardware Platform.
Avaya SBC has two main components: the management system named Element Management System (EMS), and the call processing system named SBC. Depending on the network size and service requirement, you can deploy Avaya SBC in one of the following configurations:
Standalone configuration
In the standalone configuration, the EMS and SBC co-reside in the same server.
Multiple server configuration
In the multiple server configuration, the EMS and SBC are deployed on separate servers.
High Availability (HA) configuration
In an HA configuration, SBC servers are deployed in pairs. Each pair has one SBC acting as the primary while the other SBC is the secondary. Both servers are controlled by a single EMS or a replicated EMS pair.
