Grigonis, Richard. <br/><br/>
Computer telephony encyclopedia. / 
by Richard Grigonis. 
 - New York :  CMP Books,  2000. 
 - 563  p. 
<br/><br/><label>ISBN: </label>1578200458 :  KES 4800 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Digital communications.