Nagireddi, Sivannarayana. <br/><br/>
VoIP voice and fax signal processing / 
Sivannarayana Nagireddi 
 - Hoboken, N.J. :  Wiley,  c2008 
 - xl, 550 p. :  ill. ;  25 cm. 
<br/><br/> Includes bibliographical references (p. 498-516) and index 
<br/><br/><label>ISBN: </label>0470227362 (cloth) 9780470227367 (cloth) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Internet telephony<br/>Facsimile transmission<br/>Signal processing--Digital techniques