Chapter 1: Introduction; Avaya G350 Media Gateway Overview - Avaya G250 Overview

Chapter 1: Introduction

The Avaya Branch Gateways (Avaya G250 and G350 Media Gateways) form part of Avaya
Enterprise Connect, Avaya's solution for extending communication capabilities from the
headquarters of an organization to all collaborative branch locations. Avaya Enterprise Connect
helps you provide the same high quality services to all organization members, regardless of
their location.
The Branch Gateways are high-performance converged telephony and networking devices that
are located in small branch locations, providing all infrastructure needs in one box — telephone
exchange and data networking. The Branch Gateways each feature a VoIP engine, WAN router,
and Power over Ethernet LAN switch. The G350 provides full support for legacy IP, DCP, and
analog telephones. The G250 supports legacy IP and analog telephones. In addition, the
G250-DCP model supports DCP telephones.
The G350 is designed for use in an eight to 40 user environment, aimed at branch offices with
16 to 24 stations. The G250 is designed for use in a two to 12 user environment, aimed at small
branch offices with two to eight stations.
Telephone services on a Branch Gateway are controlled by a Media Gateway Controller (MGC).
You can use a media server running Avaya Communication Manager (CM) call processing
software as an MGC. Both the gateways integrate seamlessly with Avaya Media Servers
S8700, S8710, S8720, S8500, S8400, and S8300 to provide the same top quality telephony
services to the small branch office as to the headquarters of the organization.
The Branch Gateways can subtend to an MGC located at the headquarters or the MGC can be
installed locally. The Branch Gateways can optionally house an internal Avaya S8300 media
server for Enhanced Local Survivability (ELS), providing full MGC functionality in the event that
the connection with the primary MGC is lost, or as the primary MGC for standalone deployment.
When the primary MGC is located at a remote location, the G250 features Standard Local
Survivability (SLS). SLS provides partial backup MGC functionality in the event that the
connection with the primary MGC is lost.
In addition to advanced and comprehensive telephony services, the Branch Gateways provide
full data networking services, precluding the need for a WAN router or LAN switch.

Avaya G350 Media Gateway Overview

The G350 is a modular device, adaptable to support different combinations of endpoint devices.
Pluggable media modules provide interfaces for different types of telephones and trunks. A
combination is selected to suit the needs of the branch. A LAN media module with PoE
standard compliant Ethernet ports provides support for IP telephones as well as all other types
of data devices. A range of telephony modules provides full support for legacy equipment such
as analog and digital telephones.
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