@book{14425,
	author = {Bellamy, John C.},
	title = {Digital Telephony /},
	publisher = {Wiley-Interscience,},
	year = {2009.},
	address = {[S.l.] :},
	edition = {3rd ed.},
	url = {http://www.amazon.com/exec/obidos/ASIN/0471345717/chopaconline-20}
}