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Glossary
OPS ~ PEPU
GL-6 Strata DK Programming 5/99
OPS Off-premises Station.
PBTC A Toshiba-supplied cable used to connect customer-supplied batteries to a cabinet
power supply in a one- or two-cabinet system for emergency reserve power for the
entire system.
PBX Private Branch Exchange—Industry-standard term which refers to a telephone
switch, usually on-premises, which serves an individual company, and is connected
to a public telephone exchange through the Central Office (CO).
PCB Printed Circuit Board.
PCM Pulse Code Modulation—A widely-used form of digital telephone switching.
PCOU CO Line Interface Unit—An optional PCB (an older version of RCOU) that
provides the system with four loop start CO lines. Supports Caller ID when used
with RCIU/RCIS circuits.
PDIU-DI2 Integrated Data Interface Unit—Replaces the normal digital telephone base so that
the telephone can be used for the transmission and reception of data between a
terminal/personal computer connected to the telephone and devices connected to
other PDIU-DIs or to modems, printers, and computers which are in turn connected
to PDIU-DSs. The PDIU-DI is also used to provide personal computer auto dialing
of voice calls without a modem; and, access to outside dial-up data services and/or
bulletin boards via modem pooling.
Note
Replaced by RPCI-DI.
PDIU-DS Stand-alone Data Interface Unit—Used for modem pooling, printer sharing, and
accessing host/mainframe computer.
PDKU2 Digital Telephone Interface Unit—An optional PCB that provides the system with
eight digital telephone circuits. In addition to digital telephones, the PDKU can
support data interface units (stand-alone and integrated), a digital DSS console
(DDSS), RPCI, ADM, and a digital door phone/lock control unit (DDCB).
[PDN] Primary Directory Number.
PEKU Electronic Telephone Interface Unit—An optional PCB that provides the system
with eight electronic telephone circuits, which can support electronic telephones, a
Background Music source, a door phone/lock control unit (HDCB), an electronic
DSS console (HDSS), and amplifiers for two CO-line conference calls. The PEKU
is also used with older Strata systems.
PEMU E & M Tie Line Unit—An optional PCB (an older version of REMU) that provides
the system with support for four E & M Type I tie lines. The PEMU is also used
with older Strata systems.
PEPU External Page Interface Unit—An optional PCB that provides support and/or circuit
interface mainly for optional hardware peripherals and upgrades associated with
external paging functions.
Term Definition