An Avaya Media Gateway supports both bearer and signalling traffic routed between packet switched and circuit switched networks. Optional form factors are supported. Avaya Communication Manager running on Avaya Media Servers controls voice and signalling over a variety of stackable and modular Media Gateways. The Media Gateways contain the network and endpoint interfaces as well as call classification, announcement boards, etc. Through these interfaces, Avaya Communication Manager performs gateway/gatekeeper functions.
Avaya G250 Media Gateway
The Avaya G250 Media Gateway is for small branch offices that want to support enterprise telephony capabilities and contact centre applications in a highly-available environment, with the option to add greater survivability.
The G250 supports the connection of PCs, LAN switches, IP telephones, analogue telephones and trunks, via fixed analogue and PoE ports on the chassis. A media module slot supports either of two WAN media modules, for connection to a WAN. There are four models of the G250, with various port combinations for support of analogue, BRI, E1 trunks or DCP telephones
Avaya G350 Media Gateway
The G350 Media Gateway is a powerful converged networking device that incorporates an IP Telephony Gateway, an advanced IP WAN router, and a high-performance LAN switch into a compact (3U) modular chassis designed for industry standard 19" data rack mounts.
The G350 is a high-performance converged telephony and networking device that sits in a small branch location, providing all infrastructure needs in one box - telephone exchange and data networking. The G350 is designed for use in a 15 - 50 user environment but can support up to 75 users. The G350 features a VoIP engine, WAN router and Power over Ethernet LAN switch and provides full support for legacy digital and analogue telephones.
The Avaya G350 Media Gateway forms part of Avaya Enterprise Connect, a solution for extending communication capabilities from the headquarters of an organisation to all collaborative branch locations. Avaya Enterprise Connect helps provide the same high quality services to all organisation members regardless of their location.
The G350 integrates seamlessly with S8700, S8500 and S8300 Media Servers running Communication Manager to provide the same telephony services to the small branch office as to the headquarters of the organisation. The G350 is designed to network back to a central External Call Controller (ECC), such an Avaya S8300/G700, the S8500 or the S8700/S8710 Media Server (running Communication Manager 2.0 or higher). This significantly reduces costs by enabling the enterprise to design and administer telephony services for all remote branch office locations from one central location.
For business continuity, the G350 can be configured to register with up to 3 back-up servers if the primary server fails. A local Avaya S8300 Media Server can also be optionally installed as a Local Survivable Processor (LSP) to provide enhanced local survivability. The LSP acts as the server of last resort, taking over telephony controller functions for the G350 if all other means fail.
The S8300 can be configured as an Internal Call Controller (ICC) to provide standalone gateway functionality for the G350, with an optional IA770 card to provide local INTUITY™ AUDIX® voice mail support. This enables G350-based remote office solutions to be deployed today, with the ability to easily migrate to a remote gateway on a central server location at a future date.
The G350 is a modular device, adaptable to support different combinations of endpoint devices. Media Modules provide interfaces for different types of telephones and trunks in a combination 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 analogue and digital telephones.
The chassis contains one High-Density Media Module (HDMM) slot designed to accommodate a PoE blade to provide power to the IP handsets.
Avaya G450 Media Gateway
The Avaya G450 Media Gateway provides a secure, reliable, and scalable platform for delivery of Avaya Communication Manager-based IP telephony applications. It is targeted for mid to large sized branch offices, medium sized standalone businesses, or small campus environments. Like other Avaya GX50 series Media Gateways, it can be configured to extend Communication Manager features and applications to branch offices at the edge of the enterprise network. The G450 can also be configured with an S8300 Server blade or a standalone S8500 Server to deliver Communication Manager-based telephony to standalone or small campus environments.
The Avaya G450 Media Gateway consists of a 3U high, 19" rack mountable chassis with field-removable Supervisor Main Board Module, Power Supplies, Fan Tray, DSP resources and memory. It has eight Media Module slots that host a combination of interface boards to support T1/E1, ISDN-BRI, WAN interfaces, digital or analogue telephones and analogue trunks. The first Media Module slot can also host an S8300 Server to provide integrated IP Telephony for standalone businesses or mission-critical survivability for branch office-deployed G450s.
Robust Resiliency Features
The G450 delivers a variety of voice survivability options to help ensure that the branch can continue to function effectively in the event of network outages. By using an S8300 Server in Local Survivable Processor (LSP) mode, full-featured IP telephony is restored quickly when the WAN link between the main S8XXX Server and the remote G450 is broken. Even without the LSP, the G450 supports Standard Local Survivability, where basic telephony features are available when the WAN link fails. Furthermore, dual, redundant hot-swappable power supplies and replaceable, hot-swappable main board modules and fan trays ensure help to lower both MTBF and MTBR.
Designed for Deployment Flexibility
The G450 is interoperable with other Avaya Media Gateways and can be used in either the main headquarters location (with an S8300 or S8500 Server running Communication Manager) or a mid to large branch office networked back to a central S8XXX Server.
Scalability
The G450 has the capacity to grow as business needs expand with its modular architecture and capacity for 192 analogue or digital endpoints, 8 T1/E1s, 240 DSPs, and 64 announcements. Multiple G450s can be controlled by S8XXX Servers in either ICC or LSP mode.
Avaya G650 Media Gateway
The Avaya G650 Media Gateway delivers the scalability, features, and system uptime that enterprises require for mission-critical telephony applications in campus and large office environments.
The G650 seamlessly integrates traditional circuit-switched and IP-based telephony networks, providing core telephony gateway services to all endpoints in a mixed TDM/IP environment.
Designed to address the need for converged solutions, the G650 Media Gateway gives enterprises flexibility to adapt to changing business needs and allows them to evolve easily from circuit-based telephony infrastructures to the next generation of IP infrastructures, including those based on the open SIP (Session Initiation Protocol) standard.
Avaya solutions are based on a modular architecture of centralised media servers that provide call processing and control through Communication Manager software and a distributed network of media gateways. For call control, the G650 Gateway connects to an external S8500 or S8700 Media Server over an IP link. This enables the enterprise to design and administer telephony services for all gateways from one central location. The G650 is complemented by an IP Server Interface (IPSI) circuit pack, which adds Emergency Transfer, environmental maintenance, and duplicated call control features in the gateway.
For scalability, up to five G650 Media Gateways can be combined to form a high-capacity Port Network that may be integrated into existing telephony networks, supporting voice connectivity over IP, TDM, or ATM transport. A single IPSI may be used to provide server connectivity for the entire port network. For mission critical applications, port networks with two or more G650 gateways can support duplicated IPSI circuit packs that provide fully redundant control paths to the Media Server, ensuring call preservation and operational continuity in the event of path failure within the network.
Avaya G700 Media Gateway
Designed to meet the needs of highly distributed enterprises with mission critical voice applications and to meet the communication needs of small to mid-size offices, branch offices and global multi-site networked customers with 20 - 400 end points.
The G700 Media Gateway with S8300LSP combination offers the flexibility and reliability that growing companies need. The configuration leverages the distributed architecture benefits of a stand-alone media gateway or a media server/media gateway concept and provides a standards-based IP and/or TDM communications infrastructure without compromising applications, reliability and multi-service networking. The solution is modular and supports stackable, hot-swappable, redundant architectures.
The G700 Media Gateway configured with a local survivable processor (LSP) is a great solution for remote/branch offices of a larger enterprise network. This configuration leverages the distributed architecture benefits of the media gateway concept and provides for mission-critical operation via a local survivable processor, as well as a standards-based IP and/or TDM communications infrastructure that doesn't compromise applications or reliability.