Bill  Douskalis <br/><br/>
IP telephony   : the integration of Robust VoIP services 
by Bill Douskalis 
 - New Delhi  Pearson Education  2002 
 - viii, 331p. 
<br/><br/><label>ISBN: </label>9788178082851 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Voice telephony--control<br/>Internet telephony<br/>Computer networks
<br/><br/><label>Dewey Class. No.: </label>621.386 D749i