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

 - New York  John Wiley & Sons  2000 
 - 643 
<br/><br/><br/>Eng. 
<br/><br/><label>ISBN: </label>0-471-34571-7 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Engineering--Background and Terminology , Why Digital ?  Voice Digitization
<br/><br/><label>Dewey Class. No.: </label>621.385  / BEL-D