Hersent, Olivier. <br/><br/>
IP telephony :  packet-based multimedia communications sysyems / 
Olivier Hersent ; Jean-Pierre Petit and David Gurle. 
 - New Delhi :  Pearson,  2000. 
 - xiii, 456 p. :  ill. ;  25 cm. 
<br/><br/>Includes index. 
<br/><br/><label>ISBN: </label>9788178082585 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Internet telephony.
<br/><br/><label>LC Class. No.: </label>TK5105.8865  / .H47 2005 
<br/><br/><label>Dewey Class. No.: </label>004.62  / HER