Stallings, William <br/><br/>
ISDN and broadband ISDN with frame relay and ATM  

 - 4th ed  
 - Pearson, New Delhi  New Delhi  1999 
 - 552 
<br/><br/>
<br/><br/><br/>E 
<br/><br/><label>Universal Decimal Class. No.: </label>384.648 Sta