Tutorial, digital private branch exchanges (PBXs) / 
[edited by] Edwin R. Coover. 
 - Washington, D.C. :  Los Angeles, CA :  IEEE Computer Society Press ;  [Order from] IEEE Computer Society,  c1989. 
 - ix, 384 p. :  ill., ports. ;  28 cm. 
<br/><br/>What PBXs Do and How They do It (Page-5), PBXs as Office Service Centers (Page-103), A Modern PBX in Detail NEC’s NEAX2400 IMS as Example (Page-153), PBXs as LANs (Page-213), Distrubuted Architectures (Page-265), Positioning for ISDN (Page-301),  
<br/><br/><br/>Almirah No.3  Shelf No.4 
<br/><br/><label>ISBN: </label>0818608293 
<br/><br/><label>LCCN: </label>88082227 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Digital electronics.<br/>Private branch exchange telephone equipment industry.<br/>Telephone switching systems, Electronic.<br/>Telephone--Private branch exchanges.
<br/><br/><label>Dewey Class. No.: </label>004.6