Microsoft Office Live Communications Server

Live Communications Server, an enterprise-grade, instant messaging and presence solution, integrated with the Microsoft® Office System and the Windows® Server System. 

Along with these main features and benefits of using presence-enabled real-time communication with Office applications such as Outlook® and Windows SharePoint® Services team sites, include:

• Find local and remote users fast, regardless of time zone, geography or organizational boundaries.
• Increase individual productivity using presence, instant messaging and real-time communication capabilities
• Collaborate with business partners as easily as co-workers, while keeping sensitive business information encrypted and logged
• Live Communications Server is ideal for use in regulated environments