Ohrtman, Frank. Voice over 802.11 Frank Ohrtman. - Boston : Artech House, c2004. - xv, 258 p. : ill. ; 24 cm. - Artech House telecommunications library . ISBN: 1580536778 Subjects--Topical Terms: IEEE 802.11 (Standard)Internet telephony. Dewey Class. No.: 621.382/12