TY  - GEN
AU  - Coover,Edwin R.
TI  - Tutorial, digital private branch exchanges (PBXs)
SN  - 0818608293
U1  - 004.6 
PY  - 1989///
CY  - Washington, D.C., Los Angeles, CA
PB  - IEEE Computer Society Press, [Order from] IEEE Computer Society
KW  - Digital electronics
KW  - Private branch exchange telephone equipment industry
KW  - Telephone switching systems, Electronic
KW  - Telephone
KW  - Private branch exchanges
N1  - 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),
ER  -