Kumar, Vineet.  <br/><br/>
IP Telephony with H.323 :   Architectures for Unified Networks and Integrated Services /  
Kumar Vineet, Korpi Markku, Sengodan Senthil. 
 - New York :   Wiley & Sons,   2001. 
 - XVII, 605 s.:   il.;   24 cm. 
<br/><br/><label>ISBN: </label>0471393436