Freeman, Roger L. <br/><br/>
Practical data communications / 
Roger L. Freeman 
 - 2nd ed. 
 - New York :   John Wiley & Sons, Inc;   c2001 
 - xxxi, 825p.:  ill. ;   21 cm 
 - Wiley series in telecommunications and signal processing .
<br/><br/><label>ISBN: </label>0471392731 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Data transmission systems
<br/><br/><label>Dewey Class. No.: </label>004.6