This study analyzes the premises-based true Unified Communications market in terms of broad market and technology trends, demand patterns across key verticals, geographic adoption, drivers for UC adoption, and challenges. It provides detailed market sizing by different technology and user segments. The report analyzes the impact of pervasive mobility on the communications market and highlights vendor solutions that focus on integrating the fixed and the mobile worlds. Also, it looks at the impact of emerging technologies such as application virtualization, and how this is impacting UC implementation trends. The report provides an extensive insight into competitor strategies and compares solutions across different vendors.