Ali, Syed Riffat. <br/><br/>
Digital switching systems : system relability and analysis / 
Syed Riffat Ali 
 - New York :  McGraw-Hill,  c1998 
 - xv, 219 p. :  charts;  24 cm. 
<br/><br/><label>ISBN: </label>0070010692 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telephone switching systems, Electronic--Reliability.<br/>Digital telephone systems--Reliability.<br/>System analysis
<br/><br/><label>Dewey Class. No.: </label>621.387  / A898D