What is Unified Messaging?
Unified Messaging is the integration of all your different communication media: voice phone calls, email, Instant Messaging, SMS, fax, etc., into one user interface that may reside on a desktop computer, laptop, or mobile device such as a cell phone or Blackberry. With UM, you're always in touch with coworkers and customers, even if they are trying to contact you via a medium that you don't happen to have access to at the moment.