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Avaya Application Solutions
20 Avaya Application Solutions IP Telephony Deployment Guide
 
Avaya DEFINITY Server R
Avaya DEFINITY Server SI
Avaya DEFINITY Server CSI
These servers run on the Oryx/Pecos proprietary operating system, and function in the same 
way as the servers in 
fit into Avaya CMC1, SCC1, and MCC1 Media Gateways.
The focus of this document is network design incorporating the newer Communication Manager 
platforms. Therefore, the DEFINITY Servers are only discussed briefly here. 
Avaya Media Gateways
An Avaya Media Gateway supports both bearer traffic and signaling traffic that is routed 
between packet-switched networks and circuit-switched networks. Communication Manager 
running on Avaya servers controls voice and signaling over a variety of stackable and modular 
Media Gateways:
Avaya G150 Media Gateway
Avaya G250 Media Gateway
Avaya G350 Media Gateway
Avaya G450 Media Gateway
Avaya G650 Media Gateway
Avaya G700 Media Gateway
Avaya G860 High Density Media Gateway
Avaya CMC1 Media Gateway
Avaya SCC1 Media Gateway
Avaya MCC1 Media Gateway
MultiTech MultiVoIP Gateway
Avaya IG550 Integrated Gateway
The Media Gateways contain the network and the endpoint interfaces, as well as call 
classification, announcement boards, and so on. Through these interfaces, Communication 
Manager performs gateway/gatekeeper functions. For more information on the Media 
Gateways, see 
Avaya Integrated Management
Avaya Integrated Management is systems-management software for managing converged 
voice and data networks.