Kessler, Gary C., <br/><br/>
Isdn :  Concepts, facilities, and services / 
Gary c. kessler 
 - 302 páginas 
<br/><br/><label>ISBN: </label>0070342423 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Redes digitales de servicios integrados
<br/><br/><label>LC Class. No.: </label>TK5103.7  / K47