Collins, Daniel <br/><br/>
Carrier grade voice over IP / 
Daniel Collins 
 - 2nd ed. 
 - New York, N.Y. :  McGraw-Hill,  c2003 
 - 522 p. :  ill. 
 - McGraw-Hill networking professional .
<br/><br/>Includes bibliographical references and index Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0071406344 
<br/><br/><label>Subjects--Topical Terms: </label><br/>INTERNET TELEPHONY
<br/><br/><label>LC Class. No.: </label>TK5105.8865  / C644C 2003