ISDN systems :  architecture,technology, and applications / 
editor, Pramode K. Verma: Contributors, Burton R. Saltzberg... [and others]. 
<br/><br/><label>ISBN: </label>0135057361 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Integrated services digital networks.
<br/><br/><label>LC Class. No.: </label>TK5103.7   / .I84 1990