Bellamy, John C. <br/><br/>
Digital telephony/ 3rd ed. 

 - 3rd ed. 
 - New York  John Wiley  2002 
 - XXV, 643p. 
<br/><br/><label>ISBN: </label>9814126357 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telephony2309
<br/><br/><label>Subjects--Index Terms: </label>621.395  Digital Telephony 
<br/><br/><label>Dewey Class. No.: </label>621.395 BEL