Glossary - Toshiba Strata DK8 General Description Manual

S T R A T A D K 8 & D K 1 6
G E N E R A L D E S C R I P T I O N
AA Auto Attendant.
ADM Add-on Module.
BPS Bits per second—baud rate.
CO Central office.
CODECs Coder/decoder semiconductor.
DDCB Door phone/lock control unit that con-
nects to designated digital telephone cir-
cuits.
DISA Direct Inward System Access.
DK Digital key.
DSS Direct Station Selection.
DTMF Dual-tone Multi-frequency.
EOCU DK16 Off-hook Call Announce (OCA)
subassembly—optional PCB upgrade to
PEKU or PESU for OCA.
FCC Federal Communications Commission.
HESB External speaker unit—speaker box with
built-in amplifier.
HHEU A subassembly to upgrade a digital or
electronic telephone with a headset
and/or Loud Ringing Bell interface.
IMDU DK16 Remote maintenance modem
subassembly that can be installed on
the PIOU or PIOUS.
KCDU DK16 CO Line/Digital Telephone Inter-
face Unit installed in the Expansion Key
Service Unit that provides two loop start
CO line circuits and four digital tele-
phone circuits.
KFCU DK16 optional plug-in feature cartridge
that enables the integration of feature
upgrades, such as Built-in Auto
Attendant.
KPSU16 DK16 factory installed power supply.
KSTU DK16 optional four circuit Standard tele-
phone Interface Unit that can be
installed in the Base Key Service Unit.
KSU Key service unit.
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GLOSSARY

K4RCU DK16 4-circuit subassembly for Auto
Busy Redial and DTMF devices. Also
required for Built-in Auto Attendant.
LCD Liquid crystal display.
LED Light emitting diode—busy lamp indica-
tion.
LSI Large scale integration.
MDF Main distribution frame.
MDFB Door phone unit.
OCA Off-hook Call Announce.
PBX Private branch exchange.
PCB Printed circuit board.
PCM Pulse code modulation.
PCOU DK16 four circuit CO Line Interface Unit
that can be installed in the Expansion
Key Service Unit.
PDIU-DI2 Integrated data interface unit that can be
attached to digital telephones.
PDIU-DS Stand-alone data interface unit that can
be connected to a digital telephone cir-
cuit.
PDKU DK16 eight circuit Digital Telephone
Interface unit that can be installed in the
Expansion Key Service Unit.
PEKU DK16 eight circuit Electronic Telephone
Interface Unit that can be installed in the
Expansion Key Service Unit.
PESU DK16 combination Standard/Electronic
Telephone Interface Unit that has two
standard telephone circuits and four
electronic telephone circuits. Can be
installed in the Expansion Key Service
Unit.
PIOU DK16 option Interface Unit that can be
installed in the Expansion Key Service
Unit.
PIOUS DK16 option Interface Unit that can be
installed in the Expansion Key Service
Unit.
A U G U S T 1 9 9 3