Microsoft offers a number of different clients that enable users to sign in to Office Communications Server 2007. There are a number of new clients available for Office Communications Server 2007 that are not available in previous releases.
Clients for Live Communications Server 2003 include the following:
Windows Messenger 5.1
Clients for Live Communications Server 2005 SP1 include the following:
Office Communicator 2005
Office Communicator Mobile 2005
Communicator Web Access (2005 release), which is available as a Web download
Clients for Office Communications Server 2007 are as follows:
Office Communicator 2007, a Windows client that runs on the latest service packs of Windows Vista, Windows XP, and ...