Wallace, Kevin <br/><br/>
Authorized self-study guide : Cisco voice over IP (CVOICE) 

 - 3rd ed 
 - Indianapolis, IN:  Cisco Press,  2009 
 - xxi, 576 p. : ill. ; 24 cm. . + 1 CD-ROM (4 3/4 in.) 
<br/><br/><label>ISBN: </label>9781587055546 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electronic data processing personnel - Certification - Study guides
<br/><br/><label>Dewey Class. No.: </label>005.3 JEF