Bill Douskalis. <br/><br/>
Putting VoIP to work :  Softswitch network design and testing / 
Bill Douskalis. 
 -  N.J :  Prentice Hall,  2002. 
 - xvii, 327 p. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>130409596 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Internet telephony--Computer networks--Switching theory.
<br/><br/><label>Dewey Class. No.: </label>621.38212 D741