The basics book of ISDN 

 - 2nd ed. 
 - Reading  Addison-Wesley  1992 
 - 45 p.  Illustration 
 - Motorola Codex Basics Book Series .
<br/><br/><label>ISBN: </label>0201563681 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer science<br/>INTERFACING
<br/><br/><label>Dewey Class. No.: </label>004.6  / BAS