Angell, David <br/><br/>
ISDN for dummies 

 - 1st ed.  
 -  Comdex Computer Publ.  1995 
 - xxiii+332 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Video conferencing Switching, telephone
<br/><br/><label>Dewey Class. No.: </label>621.385  ANG