If you use OCS (Office Communication Server) on premise you know the power of instant communication with full integration with the Microsoft stack (SharePoint, Exchange and Office on the desktop). Microsoft Online Services has OCS as an available option and it is included in the BPOS package. To enable OCS you need to log into the administration center (http://www.admin.microsoftonline.com) and then click on the services tab. After that you just click the link in the top navigation to Office Communications Online and then click the enable tab. Check out the BPOS tutorial screencast on just this process below.
b86e982b-f570-4a47-8d67-94c046a0fd53|1|5.0