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

 - Third 
 - New York  John wiely  2006 
<br/><br/><label>ISBN: </label>0000048523 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Telephony<br/>Digital <br/>Telephony(621.385)
<br/><br/><label>Dewey Class. No.: </label>621.385