Tom Carpenter <br/><br/>
Ccna Cisco Certified Network Associate Voice Study Guide (Exams 640-460 & 642-436) (Certification Press)(Pbk) Pbk/ 
Tom Carpenter 
 -  Mcgraw Hill,  2011 
 - 579 pages 
<br/><br/><label>ISBN: </label>9780071744409 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer scienceience
<br/><br/><label>Dewey Class. No.: </label>4.692  / CAR