I have Exchange 2003 server running with SP2 plus Blackberry Enterprise Server(BES) 4.1.
Goal: I like to provide chat service on both desktop and Blackberry devices. But Exchange 2003 does not seem to have chat service and there is no plan to upgrade to Exchange 2007 which has chat service.
Q#1. Is it possible to run chat service on Exchange 2003?
Q#2. If yes, what software do I need to install on Exchange 2003?
Q#3. If there is no way to run chat service on Exchange 2003, then is it possible to run such chat service on BES so blackberry users can use it?
Any advice to achieve my goal is appreciated.