Microsoft Office Communicator Mobile 2007 R2 is ready to ship and makes it easy to stay connected from a mobile phone. Communicator Mobile 2007 R2 works on Windows Mobile 6 (PocketPC or SmartPhone) with a minimum of 72 MB or ROM. The Communicator Mobile project was conducted in parallel with the other OCS 2007 projects. The goal was to elevate mobile devices to first-class participants in Microsoft’s Unified Communications (UC) ecosystem. Thinking about the investments Microsoft made in voice, it made sense for us to have an OCS client on the mobile phone. We wanted this client to be a full UC endpoint, allowing the mobile phone to be the user’s only phone and a great complement to Microsoft Office Communicator.