Newton Harry. <br/><br/>
Newton's Telecom Dictionary.The Official Dictionary of Computer Telephony,Telecommunications,Networking and Voice Processing / 
Newton Harry. 
 - 7 th expanded ed. 
 - [New York] :  Flatiron Publ.,  1994. 
 - III,1177 s. ;  23cm. 
<br/><br/><label>ISBN: </label>0936648473 
<br/><br/><label>Universal Decimal Class. No.: </label>621.39  030.8