Thermos, Peter  <br/><br/>
Securing Voip Networks : Threats, Vulnerabilities, And Countermeasures 
Peter Thermos 
 - Upper Saddle River  Addison-wesley  2008 
 - xxiii, 359p.  23cm. 
<br/><br/>Includes index 
<br/><br/><label>ISBN: </label>9780321437341 
<br/><br/><label>Dewey Class. No.: </label>005.8  / THE