Bates, Bud <br/><br/>
Voice and data communications handbook 
Bud Bates and, Donald Gregory. 
 - New York  McGrawHill  1996 
 - xx,699p., ill.; 24cm.- (McGraw-Hill computer communications series). 
<br/><br/><label>ISBN: </label>0-07-005147-x. 
<br/><br/><label>Dewey Class. No.: </label>384.6  / B32V