Microsoft Press celebrates 25 years of publishing and offers free Ebook monthly. This June Microsoft press offers Programming for Unified Communications with Microsoft Office Communications Server 2007 R2 and Microsoft Office Communications Server 2007 R2 Resource Kit.

Note : Free Ebook offers available for a week only, so download the e-books today.

Programming for Unified Communications with Microsoft Office Communications Server 2007 R2 by Rui Maximo; Kurt De Ding, Vishwa Ranjan, Chris Mayo, Oscar Newkerk, and the Microsoft OCS team. This book contains Step-by-step programming scenarios show you how to deliver high-quality VoIP, presence, click-to-communicate, and contextual collaboration across the enterprise and across time zones. This book is available for download in PDF file format which is around 7.1 MB of file size.

Microsoft Office Communications Server 2007 R2 Resource Kit by Rui Maximo, Rick Kingslan, Rajesh Ramanathan, Nirav Kamdar with the Microsoft Office Communications Server Team. This book contains definitive resource for deploying, configuring, and supporting Office Communications Server 2007(fully updated). This book is available for download in PDF file format which is around 30 MB of file size.

Note : Registration is required, so Microsoft asks for sign up before getting ready for download.