Toshiba Strata DK 280 Installation Manual page 863

and line capacities. The RCTU PCBs also provide
interface for the optional RRCS PCB and RKYS
key.
RDDU:
Direct Inward Dialing Interface Unit-Optional
printed circuit board (PCB) that provides four
analog Direct Inward Dialing line circuits. Supports
ANI and DNIS with DK280 Release 3.
RDSU:
Digital/Standard Telephone Interface Unit-
Optional printed circuit board (PCB) that provides
two standard telephone and four digital telephone
circuits in its basic configuration. An RSTS can be
attached to the RDSU for two additional standard
telephone circuits.
RDTU:
Ti/DS-1 Interface Unit-Optional printed
circuit board (PCB) that provides up to 24-digital
channels that can individually be assigned for loop
start CO line, ground start CO line, E & M tie line,
or DID line operation. Supports ANI and DNIS with
DK280 Release 3.
REMU:
E & M Tie Line Unit-An optional printed
circuit board (PCB) that provides the system with
support for four E & M Type I or Type II,
Immediate or Wink Start tie lines. Supports ANI
and DNIS with DK280 Release 3.
RFIF:
Floor Mount Installation Kit-Kit that is used to
floor mount systems.
RGLU:
Analog Ground/Loop Start CO Line Interface
Unit-Provides four CO line circuits that can be
individually configured for loop start or ground
start CO line operation. Supports Caller ID when
used with RCIU/RCIS circuits.
RKYS:
Feature Key Upgrade-Subassembly that
attaches to the common control unit to provide the
system with optional features. There are four
versions of the RKYS: the RKYSl, the RKYS2,
the RKYS3 and the RKYS4, each of which
provides a distinct set of features.
RMDS: Remote Maintenance Modem Subassembly-
A subassembly installed on the RSIU Optional
Interface Unit that allows the system to be
connected with a remote administration/
maintenance terminal or 280AdminI280Backup
personal computer.
RPCI-DI:
Computer Data Interface Unit-Replaces the
normal telephone base and provides all the
functions of PDIU-D12. In addition, it can be
switched to a second mode automatically and
used with a Telephone Application Program
Interface (TAPI) software application.
ROM:
Read Only Memory-Refers to the type of
system memory that holds static software that
comprises the mechanics of the features'
functions. ROM is only revised by Toshiba
software engineers.
RPSB (1 and 2):
Power Strip-Interface between
cabinet power supplies and the commercial AC
power source. The RPSB provides outlets for
three power supplies. One RSPS is required for
systems with three or four cabinets, two or three
RSPSs for five- or six-cabinet systems.
RPSU280:
Cabinet Power Supply-Furnishes power
to all of the stations and peripherals connected to
the cabinet PCBs. Each Base and optional
expansion cabinet has a separate power supply.
RRCS:
Dual-tone Multi-frequency Receiver-
An optional upgrade to the system Common
Control Unit (RCTU) that provides Dual-tone Multi-
Frequency (DTMF) receivers for system Direct
Inward System Access (DISA) CO lines, E&M tie
lines, DID, DNIS and ANI lines, Auto attendant
announcement devices, remote change of call
forward-external destination, DNIS external call
routing, and stations and other peripherals that
connect to standard telephone circuits. The RRCS
comes in three models: the RRCS-4 (provides four
DTMF receivers), the RRCS-8 (eight DTMF
receivers), and the RRCS-12 (12 DTMF
receivers).
RSIS:
Optional RS-232 Serial Interface Unit-A
subassembly installed on the RSIU optional
interface unit that allows the system to be
connected to any of the following features: voice
mail SMDI, MIS for ACD, SMDR, local 280Admin/
280Backup personal computer, external
maintenance modem, Open Architecture personal
computer.
RSIU: Optional RS-232 Serial Interface Unit-An
optional printed circuit board (PCB) that provides
interface to any of the following features: voice
mail SMDI, MIS for ACD, SMDR, local or remote
280Admin/ 280Backup Personal computer, built-in
(RMDS) or external system maintenance modem,
Open Architecture personal computer. By itself,
the RSIU PCB provides one interface port. With
up to three RSIU/RMDS subassemblies, it can
provide up to four interface ports.
January 1996
Cl-5