Microsoft Office Communications Server has become the Unified Communications platform of choice for thousands of businesses seeking to drive more value from all forms of communication. This is a comprehensive, independent, and practical guide to Office Communications Server 2010, the brand-new version of this increasingly popular technology. Drawing on their extensive experience, Alex Lewis and Andrew Abbate cover all facets of planning, deploying, configuring, and managing OCS 2010 in enterprise environments. They present a detailed overview of the system and its components, offer step-by-step configuration instructions, and share dozens of best practices drawn from actual deployments. Technical professionals will find detailed chapters on each form of communication OCS 2010 can manage, including IP voice, instant messaging, audio/video conferencing, web conferencing, and much more. Along the way, Lewis and Abbate present powerful insights into planning infrastructure; monitoring day-to-day operation; troubleshooting; federation; remote access; backup/restore, Microsoft Forefront security; and many other essential topics.