Goralski, Walter J. <br/><br/>
IP telephony / 
Walter J. Goralski and Matthew C. Kolon 
 - New York :  McGraw-Hill,  c2000. 
 - xxiii, 468 p. :  ill. ;  23 cm. 
<br/><br/><label>ISBN: </label>0072130822 
<br/><br/><label>LCCN: </label>
<br/><br/><label>Subjects--Topical Terms: </label><br/>Internet telephony
<br/><br/><label>LC Class. No.: </label>TK5105.8865  / .G67 2000 
<br/><br/><label>Dewey Class. No.: </label>004.6  / G661i