Polycom Unified Communications (UC) software enables you to deploy your Polycom video infrastructure and endpoints with Microsoft Office Communications Server (OCS) or Lync Server 2010. The Microsoft Lync or Office Communications Server manages presence for each registered Polycom endpoint or component. The Microsoft UC infrastructure provides full-featured video calls between Lync or Office Communicator clients and Polycom components, including point-to-point calls and video conferencing, high-quality video, and calling directly from a contact list.