This discussion provides an overview of Microsoft Exchange 2007 Server, with integrated Unified Messaging, which provides built-in support for voice message integration with users' mailbox delivering voicemail to the desktop, and is accessible both by phone and from a traditional e-mail client. There is also a dedicated server role in the architecture for Exchange 2007, called the Unified Messaging Server. This role has the logical objects associated with it an Active Directory that help us represent the traditional PBX solutions that we have implemented.

When we talk about the office communication server, we are talking about another product from Microsoft that delivers on the Unified Communications platform by extending what we have already with Exchange in Unified Messaging to include Presence information across the enterprise.

We examine enterprise instant messaging, the ability to have a voice supported but from a software powered perspective, also looking at conferencing as being a critical part of Unified Communications and allowing for data web conferencing combined with audio conferencing together. And then finally, integrating that into a common plain interface is that Microsoft Office integration, so that common elements are used for collaboration outlook especially is now integrated components for Unified Communications.