Go through the Screenshot and text books included.
One textbook is included with link and the other is included with the pdf version.
Go through the chapters stated in the Screenshot.
Please go through it and make a post of 275 words with 2-3 APA citations & matching references.
Find and view several online videos on unified communications. Identify the URLs for three that you think do a particularly good job illustrating the characteristics and capabilities of UC systems. Select the one that you think is best and briefly justify your selection.