Microsoft Office Communications Server 2007 R2 Planning Workbook can you now get here: http://communicationsserverteam.com/files/9/ocs_2007_r2_planning_workbook/entry346.aspx
This Planning Workbook is intended to document the recommended roll-out of Microsoft® Office Communications Server 2007 R2 in an enterprise-level lab or production environment. This document’s purpose is to provide enterprise customers and deployment partners a method to begin planning for their Office Communications Server 2007 R2 deployment. This document does not replace communications with Microsoft Consulting Services or a Microsoft UC deployment partner. This is a living document that will be continually updated throughout the product lifecycle.