Lewis, Elliot <br/><br/>
Cisco Voice Over IP 

 - USA  Syngress Media  2000 
<br/><br/><label>ISBN: </label>1-928994-03-2 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cisco Voice Over IP
<br/><br/><label>Dewey Class. No.: </label>004.6  / LEW