Bellamy, John,   1941- <br/><br/>
Digital telephony /  [Book]. 
John Bellamy.  
 - 2nd ed. 
 - New York :   Wiley,   1991. 
 - xix, 572 p. :   ill. ;   25 cm. 
<br/><br/> Includes bibliographical references and index.  "A Wiley-Interscience publication." 
<br/><br/><label>ISBN: </label>0471620564 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Digital telephone systems.
<br/><br/><label>LC Class. No.: </label>TK5103.7 .B44 1991