Introduction. Avaya B5800

Introduction

This document is being released in conjunction with the announcement of General Availability for B5800

Branch Gateway R6.1 in the Centralized and Mixed Models but is applicable to the Distributed Model as well.

Below is a high level description of the branch configurations that are now fully supported.

B5800 Branch Gateway can be deployed in the Distributed, Centralized or Mixed Branch user models.

• Distributed Branch user model — In this model, call processing for the branch phones is provided locally. Non-IP phones are connected to B5800 Branch Gateway and IP and SIP video endpoints are administered with B5800 Branch Gateway as their controller. 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 trunking and to centralized applications such as conferencing and Modular Messaging.

• Centralized Branch user model — Certain 9600 Avaya SIP phones can use the B5800 Branch Gateway as a survivability gateway (see Supported telephones on page 21 of Implementing the Avaya B5800

Branch Gateway , Release 6.1, 18-603853 Issue 4 November 2011 for more information). In normal operation, these phones register directly to the Avaya Aura® Session Manager in the enterprise core and get services from core applications such as the Communication Manager Feature Server. The local B5800

Branch Gateway can still 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. If WAN connectivity to the

Avaya Aura® Session Manager is lost, the SIP phones automatically register with and get services from the

B5800 Branch Gateway. When connection to the Avaya Aura® Session Manager is available again, failback occurs where the SIP phones return to being controlled by Avaya Aura® Session Manager.

• Mixed Branch user model — Each B5800 Branch Gateway system can support extensions using the

Centralized Branch user model and extensions using the Distributed Branch user model at the same time.

The extensions supported in the Centralized Branch user model are SIP extensions only.

For general updated documentation, product support notices, and service pack information, go to the Avaya

Support Center Web site at http://support.avaya.com

or http://support.avaya.com/css/Products/P0959 for updated information specifically for Avaya B5800 Branch Gateway.

Special Note:

Avaya B5800 Branch Gateway Release 6.1 does not support the 9608, 9611, 9621 0r 9641 H.323 terminals in either distributed or mixed branch models.

Copyright 2012 Avaya Inc. All rights reserved.

Use pursuant to the terms of your signed agreement or Avaya policy.

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