Chakraborty, Shyam. Peisa,Janne. Frankkila, Tomas. Synnergren, Per. <br/><br/>
IMS Multimedia Telephony over Cellular Systems   VoIP Evolution in a Converged Telecommunication World 

 - Hoboken  Wiley  2007 
 - xxix+339p.,2218Cms 
<br/><br/><label>ISBN: </label>0470058558 
<br/><br/><label>Dewey Class. No.: </label>621.384 C4354