Toshiba DK424I, dk14, DK40I GL-5, Glossary, Term, Definition, Lsi ~ Pemu, Note Replaced by RPCI-DI

Glossary

LSI ~ PEMU

Term Definition

LSI

MDF

MDFB

MOH

NDTU

NT-1

OCA

OPS

PBTC

PBX

PCB

PCM

PCOU

PDIU-DI2

PDIU-DS

PDKU2

[PDN]

PEKU

PEMU

Large Scale Integration—Related to circuit design technology. Strata DK system printed circuit boards (PCBs) use LSI circuit design.

Main Distribution Frame—The wiring frame usually located in a phone closet.

Door Phone Box—A peripheral two-way speaker box option.

Music-on-Hold—Customer-supplied music or announcements can be sent to parties on-hold on CO lines or the intercom.

Toshiba 30-foot cable that connects the RDTU to the KSU.

Used in ISDN. Network Termination device that powers a U-interface ISDN line and enables multiple S/T ISDN devices to connect to it. The NT-1 must be

UL-listed (U.S.) or CSA-certified (Canada).

Off-hook Call Announce. There are two types: Handset OCA and Speaker OCA.

Off-premises Station.

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 Central Office (CO).

Printed Circuit Board.

Pulse Code Modulation—A widely-used form of digital telephone switching.

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.

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.

Stand-alone Data Interface Unit—Used for modem pooling, printer sharing, and accessing host/mainframe computer.

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 CO-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.

Glossary

Strata DK Programming 5/00

GL-5