Douskalis, Bill. <br/><br/>
IP Telephony: The Integration of Robust VolP Services 

 - DELHI  PEARSON  2002 
 - xxi+331p.,24x18Cms 
<br/><br/><label>ISBN: </label>8178082853 
<br/><br/><label>Dewey Class. No.: </label>621.385 D732