Bellamy, John C <br/><br/>
Digital telephony 

 - 3 
 -  John Wiley  New York  2000 
 - xxv, 643p.   
<br/><br/> Includes biliographical references and index. 
<br/><br/><label>ISBN: </label>9788126509294 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Digital mobile telephony<br/>Digital radio systems<br/>Digital subscriber access<br/>Digital voice networks<br/>Fiber optic transmission systems<br/>Telephony  Digital<br/>Traffic analysis<br/>Voice digitization