Wolf, Karl Heniz <br/><br/>
VoIP emergency calling :  foundations and practice / 
Karl heinz Wolf, Richard Barnes 
 - Chichester, West Sussex, U. K. ;  Hoboken, N. J. :  Wiley,  c2011 
 - xvi, 219 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9780470665947 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Internet telephony<br/>Telephone--Emergency reporting systems