Bocker , P. <br/><br/>
I S D N The integrated services digital network concepts  methods systems 

 - Berlin   Springer Verlag  1992 
<br/><br/><label>ISBN: </label>3-540-54819-x 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Electronics Engineering
<br/><br/><label>Dewey Class. No.: </label>621.382 B63,i