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

 - 4th.ed 
 - New Delhi  Pearson  1999. 
 - 552 p. 
<br/><br/><label>ISBN: </label>9788131705636 
<br/><br/><label>Source: </label> 713.00