Hersent, Olivier. <br/><br/>
IP telephony  packet-based multimedia communications systems /  [Book] : 
Olivier Hersent, David Gurle & Jean-Pierre Petit. 
 - New Delhi :  Person Education,  c2000. 
 - xviii, 456 p. :  ill. ;  25 cm. 
<br/><br/> All. 
<br/><br/><label>ISBN: </label>8178082586 (pbk) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>TCP/IP (Computer network protocol).<br/>Internet telephony.<br/>Multimedia systems.<br/>Telecommunication systems.
<br/><br/><label>Dewey Class. No.: </label>004.6