Bellamy, John <br/><br/>
Digital telephony  
by John C. Bellamy. 
 - 3rd ed. 
 - New Delhi  John Sons. & Wiley India  2000 
 - xxv, 643 p. : ill. ; 24 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9788126509294 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electrical Sciences; Digital telephone systems.; Digital
<br/><br/><label>Dewey Class. No.: </label>621.385  / BEL/D