Sexton, Mike.  <br/><br/>
Transmission Networking :   SONET and the Synchronous Digital Hierarchy /  
Sexton Mike, Reid Andy. 
 - London :   Artech - House,   1992. 
 - X, 360 s.:   il.;   23 cm. 
<br/><br/><label>ISBN: </label>0890065519