Stallings , William <br/><br/>
ISDN and Broadband ISDN with Frame Relay and ATM /  
William Stallings 
 - 4th ed 
 - New Delhi :   Pearson,   1999 
<br/><br/><label>ISBN: </label>978-0139737442  350.00 
<br/><br/><label>Dewey Class. No.: </label>621.382  / S783