In this document, you will learn about the properties and attributes of certificates when working with Office Communications Server 2007 and Office Communications Server 2007 R2. This document contains a walkthrough of most of the common, and some optional, tasks that you need to perform to realize the full value of the system. All roles that require certificates for deployment and operation are discussed. The properties are presented along with information to describe what they are and how they are used. This document shows you how to request the right certificate with the right parameters to make sure that you are delivering value to your users, rather than just troubleshooting problems.