Coover, Edwin R. 1942- Washington, D.C Los Angeles, CA IEEE Computer Society Press [Order from] IEEE Computer Society c1989 ix, 384 p. : ill., ports. ; 28 cm. 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), [edited by] Edwin R. Coover. Almirah No.3 Shelf No.4 Digital electronics Private branch exchange telephone equipment industry Telephone switching systems, Electronic Telephone Private branch exchanges 004.6 0818608293 88082227 20170207152523.0