Mohamed Boucadair; Pedro Miguel Neves; Isabel Borges; Olafur Pall Einarsson <br/><br/>
IP Telephony Interconnection Reference  Challenges, Models, and Engineering 

 -  Taylor and Francis  2012 
<br/><br/><label>ISBN: </label>9780429061851 
<br/><br/><label>Source: </label>EBOOK