Step 4. Prepare Your Infrastructure
Communications Server 2007
Before you start the Office Communications Server 2007 Deployment Tool, you must verify the following:
Active Directory is deployed with the necessary prerequisites and in a supported topology.
A certificate infrastructure is in place or available for server-to-server communications and for client-to-server communications.
You are aware of all the DNS records that your Office Communications Server deployment will require to enable servers and pools to communicate with one another, and clients to automatically locate their server or pool.
You have elected to enable automatic client sign-in and understand the requirements for this option.
You understand the port requirements for your Office Communications Server topology.