Toshiba strata CT Installation & Maintenance Manual page 375

Term
PACU
PBTC
PBX
PCB
PCIU
PCM
PCOU
H
PDKU2
[PDN]
C
PEKU
PEMU
PEPU
[PhDN]
PIOU
PIOUS
PORT
Strata CT I&M Manual October 2000
AC15 tie line unit—An optional PCB that provides the system with
support for four AC15 circuits.
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.
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 Exchange.
Printed Circuit Board.
Computer Data Interface Unit—Replaces the normal telephone base
and can be used with a Telephone Application Program Interface
(TAPI) software application.
Pulse Code Modulation—A widely-used form of digital telephone
switching.
Exchange Line Interface Unit—A PCB that provides the system with
four loop start Exchange lines.
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).
Primary Directory Number.
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 Exchange-line conference calls. The PEKU is also
used with older Strata systems.
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.
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.
Phantom Directory Number.
Option Interface Unit—An optional PCB that provides support and/or
circuit interface for optional hardware peripherals and upgrades.
The same as the PIOU, with some exceptions; most notably, the
PIOUS has one external paging interface zone, while the PIOU has
four.
A term used to identify a station circuit or Exchange line circuit
location.
Definition
Glossary
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GL 5