@book{66491,
	author = {Ganguly, Samrat. and Bhatnagar, Sudeept. and ebrary, Inc.},
	title = {VoIP},
	publisher = {Wiley,},
	year = {c2008.},
	address = {Chichester, England ;},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10300897}
}