If your current deployment includes one or more Directors and Edge Servers, you will need to deploy Office Communications Server 2007 R2, Director, and Office Communications Server 2007 R2, Edge Server. If you are using edge servers, A Director is recommended for enhanced security (especially against external denial-of-service attacks) and task offloading, but it is not required.

Neither Office Communications Server 2007 R2, Director, nor Office Communications Server 2007 R2, Edge Server, can communicate with Office Communications Server 2007 pools. For that reason, we recommend that you upgrade your Directors and Edge Servers at the same time.

In This Section