Wallingford, Ted <br/><br/>
Switching to VoIP / 
Ted Wallingford 
 - Sebastopol,CA :  O'Reilly,  c2005. 
 - xxi, 477 p. :  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>9780596008680 
<br/><br/><label>LCCN: </label>
<br/><br/><label>Subjects--Topical Terms: </label><br/>Internet telephony
<br/><br/><label>LC Class. No.: </label>TK5105.8865  / .W337 2005