Viswanathan  T, <br/><br/>
Telecommunication Switching  Systems and Networks   Textual Documents 

 - New Delhi  PHI Learning Pvt.  Ltd.,  2011 
 - 583:  xx;  24*15. 
<br/><br/><label>ISBN: </label>9788120307133   
<br/><br/><label>Dewey Class. No.: </label>621.382  / VIS