Strata Dk16 Expansion Key Service Unit; G E N E R A L D E S C R I P T I O N - 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

Flexible Relay Contacts: A pair of relay contacts can
be programmed to either mute Background Music
during a page announcement over external speak-
ers, to operate a device—such as an answering
machine or ringing bell—during the Night Mode, or
to provide on-off control for a Music-on-hold
source.
Standard Telephone Interface Unit (KSTU): The
optional KSTU provides four circuits that can inter-
face with 500- and 2500-type standard telephones,
as well as the other single-line devices listed below.
These devices may require that the optional
K4RCU be installed in the Base Key Service Unit to
interpret the Dual-tone Multi-frequency (DTMF) sig-
nals they may transmit.
•
Fax Machines
•
Modem
•
Dictation Equipment
•
Alternate Background Music source
•
Off-premises Stations
•
Voice Mail Devices
•
Auto Attendant Devices
DTMF/ABR Tone Detection Receiver (K4RCU): Sta-
tion users in systems that have the optional
K4RCU installed can access Automatic Busy Redi-
al (ABR); and, communicate with devices, such as
standard telephones or voice mail machines, that
require Dual-tone Multi-frequency (DTMF) signal-
ing. This unit is also required for Direct Inward Sys-
tem Access (DISA) operation, as well as for Built-in
Auto Attendant operation. Each K4RCU card con-
tains four shared receivers.
Feature Cartridge (KFCU): The optional plug-in fea-
ture cartridge will allow for the integration of future
feature upgrades. The KFCU1A version of this car-
tridge is required for Built-in Auto Attendant opera-
tion.
STRATA DK16
EXPANSION KEY SERVICE UNIT
The optional Expansion Key Service Unit, which
attaches easily to the side of the Base Unit, offers four
universal slots (Figure 11), three of which can host
any of the printed circuit boards (PCBs) described in
the following paragraphs (Table H). The weight and
dimensions of the unit are as follows:
10
Height: 18.0 in (457 mm)
Width: 7.8 in (198 mm)
Depth: 3.4 in (86 mm)
Weight: 1 lb (.45 kg) when empty
Weight: 5.3 lbs (2.4 kg) when full
NOTE:
No more than three Expansion Key Service Unit
slots can be occupied at one time. The fourth
slot is reserved for future use.
CO Line Interface Unit (PCOU): The PCOU has four
loop start CO line circuits that have the same char-
acteristics as the CO circuits in the Base Key Ser-
vice Unit.
Digital Telephone Interface Unit (PDKU): The
PDKU has eight digital telephone circuits that can
support the same peripherals as the digital circuits
in the Base Key Service Unit.
Option Interface Unit (PIOU): The PIOU provides
interfaces for such useful features as external zone
paging, Station Message Detail Recording
(SMDR), and a remote maintenance modem sub-
assembly (IMDU). Additionally, it has relay contacts
for the control of a customer-provided door lock,
Music-on-hold source, or other optional device (see
Table I). The PIOU card's three-watt or 600 Ω pag-
ing output is not used since paging is supported by
the Base Key Service Unit paging interface.
Simplified Option Interface Unit (PIOUS): With the
exception of the Zone Paging interface, the PIOUS
has everything that the PIOU has, including the
SMDR and IMDU interfaces (Table I).
Remote Maintenance Modem Subassembly
(IMDU): The IMDU is an optional modem that joins
to a PIOU or PIOUS to provide the system with a
link to off-site programming and maintenance
equipment, such as a personal computer or ASCII
terminal.
It has an internal maintenance channel and does
not require a dedicated CO line or station port.
Data transmission speed can be set at 300 or 1200
BPS full duplex.
Remote/Local Maintenance Interface Unit
(RSSU): Option TTY interface PCB used for con-
necting a maintenance terminal or external modem
(local or remote) to the DK16. Requires the DK16
expansion cabinet.
A U G U S T 1 9 9 3