Examining the Technical Details Behind VoIP Scenarios
The components that compose a VoIP topology are illustrated in Figure 10-18. This topology supports the following scenarios: calling and receiving calls outside your organization's network (PSTN), providing external access for users, and receiving voice mail. New server roles come into play when deploying an Enterprise Voice infrastructure. In addition to the basic Office Communications Server home pool, which is either an Office Communications Server 2007 Standard Edition Server or an Enterprise Edition pool, the following server roles are required or recommended.
Figure 10-18. Enterprise voice ...
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