Stallings, William. <br/><br/>
Data and computer communications / 
William Stallings. 
 - 4th ed. 
 - Englewood Cliffs N.J :  Prentice Hall International, Inc.,  1994. 
 - xv, 875 p. :  col. ill. ;  25 cm. 
<br/><br/>Refrences : p. 845-860 
<br/><br/>
<br/><br/><label>ISBN: </label>0133268284  hadiah 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Data transmission systems.<br/>Computer networks.