Kelly, Timothy V., <br/><br/>
VoIP for dummies / 
Timothy V. Kelly 
 - 60 pages ;  22 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0764595644 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Internet telephony<br/>Internetworking (Telecommunication)