Davidson, Jonathan.  <br/><br/>
Voice over IP fundamentals /   
Jonathan Davidson, James Peters. 
 - Indianápolis :   Cisco,   2000. 
 - xx; 373 p. :   figuras 
<br/><br/> PSTN - Voice over IP technology - IP signaling protocols - Voice over IP applied - Appendix. 
<br/><br/><label>ISBN: </label>1578701686 
<br/><br/><label>Subjects--Topical Terms: </label><br/>REDES
<br/><br/><label>Universal Decimal Class. No.: </label>681.324