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

 - 3 
 - New Delhi  Wiley India  2011 
 - "XVI,635p;" 
<br/><br/> Quantity Number:  1 
<br/><br/><label>ISBN: </label>9788126509294 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electronics
<br/><br/><label>Dewey Class. No.: </label> / BEL