(Via WinInsider) Scott Bekker at ENT News:
A new Microsoft Office Communicator client for Windows mobile devices entered beta testing on Thursday.
The mobile client is based on the interface of Microsoft Office Communicator 2005, which was also known by the code-name “Istanbul.” Microsoft shipped the desktop Office Communicator client in June. The desktop version is Microsoft’s preferred client for Live Communications Server 2005, replacing Windows Messenger.
Office Communicator adds substantial functionality to Windows Messenger, especially in the areas of presence extensibility and communication through voice, video, telephony and access to Web conferencing.
General availability for the mobile client is scheduled for 1H2006 and there’s supposed to be a web client in the pipeline. If you aren’t familiar with Microsoft Office Communicator 2005, check out the overview.