Bellamy, John, C  <br/><br/>
Digital telephony  

 - 3rd  
 - John wiley & sons   New York   2000 
 -   
<br/><br/><label>ISBN: </label>9-814-12635-7  
<br/><br/><label>Subjects--Topical Terms: </label><br/>TELEPHONY 
<br/><br/><label>Dewey Class. No.: </label>621.385 7 BEL