Office Communications Server 2007 defines three Edge Server roles. These server roles are referred to as Edge Servers because they are deployed in the network perimeter of an organization's network. These server roles enable an organization to expose Office Communications functionality across the corporate network boundary to remote employees, federated partners, and public IM connectivity users. Office Communications Server 2007 exposes the following edge server roles:
Access Edge Server
Web Conferencing Edge Server
A/V Edge Server
These server roles are explained in more detail in the following sections. Hardware and software requirements for Edge Servers are shown in Table 2-5.
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