Davidson, Jonathan <br/><br/>
Voicer Over IP Fundamentals:  a systematic approach to understanding the basics of voice over IP / 
Jonathan Davidson, James Peters, Manoj Bhatia, Satish Kalidindi, Sudipto Mukherjee 
 - Estados unidos:  Cisco Systems,  2007. 
 - 394 páginas 
<br/><br/><label>ISBN: </label>1587052571 
<br/><br/><label>Dewey Class. No.: </label>004.6  / V889