This document provides an introduction and overview of 3CX and the IP PBX market. It discusses that 3CX was founded in 2005 and is a Microsoft Gold Partner that works with leading VoIP vendors to provide award-winning software that sees 1000 downloads per day. It also notes that the IP PBX market is estimated to increase substantially between 2005 and 2011, reaching $19.5 billion by 2011, and shares additional facts about adoption rates and sales in the US and other global regions.