@book{56943,
	author = {Green, James H. and ebrary, Inc.},
	title = {Voice and video over IP},
	publisher = {McGraw-Hill,},
	year = {c2002.},
	series = {Executive briefings in key technologies},
	address = {New York :},
	url = {http://site.ebrary.com/lib/strathmore/Doc?id=5005996}
}