Douskalis, Bill . <br/><br/>
IP Telephony: the integration of robust VoIP sevices /   Textual Documents 
Bill Douskalis. 
 - New Delhi :   Pearson Education ,   2000. 
 - NULL ;   NULL. 
<br/><br/><label>Subjects--Index Terms: </label>Protocols Voice over IP 
<br/><br/><label>Dewey Class. No.: </label>004.62  / DOU