Overview

Chapter 1: B5800 Branch Gateway
overview
The Avaya B5800 Branch Gateway is a flexible, cost-effective communications platform for enterprise
branch offices. It enables access via SIP to Avaya Aura
®
Session Manager in the enterprise center,
optional access to centralized PSTN trunking, and access to centralized applications, such as
conferencing, messaging, and more. The B5800 Branch Gateway solution provides centralized
management by Avaya Aura
®
System Manager and centralized licensing by WebLM.
B5800 Branch Gateways are deployed in the distributed branch user model. In the distributed branch user
model, call processing for the branch phones is provided locally. Non-IP phones are connected to the
B5800 Branch Gateway and IP and certain SIP endpoints (not including the Avaya 9600 SIP phones) can
be administered with B5800 Branch Gateway as their controller (see
Supported telephones on page 12
for more information). Access to and from the rest of the Avaya Aura
®
network is via the B5800 Branch
Gateway system's Avaya Aura
®
Session Manager link across the enterprise WAN. This connection allows
for VoIP connectivity to other B5800 Branch Gateway systems, to centralized PSTN trunking, and to
centralized applications such as conferencing and Avaya Aura
®
Messaging. The centralization capability
is based primarily on the infrastructure at the enterprise core. The local B5800 Branch Gateway can be
accessed as a SIP gateway connected to the core Avaya Aura
®
Session Manager to provide access to
local PSTN trunks and services when required.
Beginning in R6.2, B5800 Branch Gateway is supported in an Avaya Communication Server 1000 (CS
1000) configuration. B5800 Branch Gateway can be deployed as a new branch in an existing CS 1000
configuration or as a replacement for Business Communications Manager (BCM) as a branch office in a
CS 1000 branch office model. In these deployments, B5800 Branch Gateway operates as a distributed
branch.
Integration of the B5800 Branch Gateway for a Communication Server 1000 configuration and for an
Avaya Aura configuration is provided in separate documents. For more information, see:
• Implementing the Avaya B5800 Branch Gateway for a Communication Server 1000 Configuration,
document number 03-604053
• Implementing the Avaya B5800 Branch Gateway in an Avaya Aura
®
Configuration, document number
18-603853
Management
The primary method for configuring and managing the branches in a B5800 Branch Gateway
system is centrally using Avaya Aura
®
System Manager R6.2. Avaya Aura
®
System Manager
is a central management system that delivers a set of shared management services and a
Avaya B5800 Branch Gateway Solution Overview June 2012 7