Freeman, Roger L.  <br/><br/>
Telecommunication system engineering / 
Roger L. Freeman. 
 - 2nd ed. 
 - New York :  John Wiley & Sons,  1989. 
 - 752 p. :  ill. ;  25 cm. 
<br/><br/><label>ISBN: </label>0471634239 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication systems--Design and construction.<br/>Telephone systems--Design and construction.