Isdn explained :  Worldwide network and applications technology / 
[ed.] by John m. griffiths 
 - 175 páginas 
<br/><br/><label>ISBN: </label>0471926752 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Redes digitales de servicios integrados
<br/><br/><label>LC Class. No.: </label>TK5103  / I73