Bellamy, John,  1941- <br/><br/>
Digital telephony / 
John Bellamy. 
 - New York :  Wiley,  1982. 
 - xviii, 526 p. :  ill. ;  25 cm. 
<br/><br/> Includes index. 
<br/><br/>Bibliography: p. 519-521. 
<br/><br/><label>ISBN: </label>0471080896 
<br/><br/><label>LCCN: </label>81011633  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Digital telephone systems
<br/><br/><label>LC Class. No.: </label>TK5103.7 
<br/><br/><label>Dewey Class. No.: </label>621.385