Bellamy, C John <br/><br/>
Digital Telephony: 

 - Third Edition 
 - New York:  John Willy & Sons,  2003. 
<br/><br/><label>ISBN: </label>98141266357 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Digital Telephony
<br/><br/><label>Dewey Class. No.: </label>621.385 BEL