Office Communications Server 2007 R2 is a significant upgrade that builds on the feature set of the previous release, Office Communications Server 2007. It provides a full set of real-time communications: IM, Web Conferencing, Audio/Video and VoIP, Group Chat, Group Response functionality, Attendant Console, Application Sharing, and an enhanced Microsoft Communicator Web Access. When Exchange 2007 integration is added, making the full ability for voice mail now just an e-mail away, Office Communications Server 2007 R2 is positioned to be a compelling end-to-end solution for all types of collaborative communications in the enterprise.