Collins, Daniel, <br/><br/>
Carrier-grade VoIP /  
 Carrier-grade Voice over IP 
Richard Swale, Daniel Collins. 
 - Third edition 
 - 1 online resource (xv, 494 pages) 
<br/><br/> Revision of: Carrier grade voice over IP / Daniel Collins. 2nd edition ©2003. 
<br/><br/>Includes bibliographical references (pages 471-480) and index. 
<br/><br/><label>ISBN: </label>9780071826600 
<br/><br/><label>LCCN: </label>2020753420 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Internet telephony.
<br/><br/><label>Dewey Class. No.: </label>004.69