Looking at the title, you might wonder what do I mean by Unified Communications. I am often annoyed by the use of this term without providing a clear definition. Its like the use of the term, Web 2.0. It vaguely refers to many applications.
Unified Communications Defined
Unified communications (UC) applications are often programs involving a combination of network-driven communication tools including Voice over IP (VoIP), Web conferencing, online collaboration, instant messaging (IM), e-mail, ....

