Rehan Haider Zaidi <br/><br/>
Computer based pabx system 
Rehan Haider Zaidi 
 - Isalamabad;  NUST School of Electrical Engineering & Computer Science,  2005 
 - xi, 63 p. :  ill. ;  27 cm. 
<br/><br/> Supervisors : Mr. Tauqeer, Mr. Nasir Mahmood. 
<br/><br/><label>Dewey Class. No.: </label>BIT-2