Avaya servers and gateways provide different ways of networking, add top-tier scalability and reliability, and support critical applications in a distributed and secure multivendor environment. To provide businesses with maximum flexibility, the server and gateway components in Communication Manager follow a modular approach. You can deploy a wide range of custom configurations to meet your business needs. You can upgrade your deployment from a single location to a converged IP network for 200 employees. You can also upgrade to a complex, multinational converged network that can support more than 10,000 voice and data users.