Strata Dk8 Optional Pcbs; 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

paragraphs. The weight and dimensions of the unit,
which is designed for wall mounting, are as follows:
Height: 16.4 in (416 mm)
Width: 10.0 in (254 mm)
Depth: 3.0 in (76 mm)
Weight: 5.7 lbs (2.59 kg)
Digital Telephone Circuits: The main circuit board
has four integrated circuits that can connect to digi-
tal telephones, stand-alone data interface units
(PDIU-DSs), and a digital door phone/lock control
unit (DDCB). Furthermore, each of the digital tele-
phones can support an integrated data interface
unit (PDIU-DI) or an add-on module (ADM).
CO Line Circuits: Two circuits for loop start central
office (CO) lines are built into the main circuit
board. Each line can be programmed for Dual-tone
Multi-frequency (DTMF) or dial pulse signaling and
has a switch to control potential excess volume
that could be created by a nearby private branch
exchange (PBX) or CO. Built-in gas tubes help pro-
tect each circuit from lightning.
Power Supply: The power supply generates
+24VDC for the entire system, even in its expand-
ed configuration.
Reserve Power: One or two optional Reserve Power
Battery and Chargers (HPFBs) can be connected
to the STRATA DK8 power supply to maintain nor-
mal operation during a power failure (See Table G
for reserve power time.)
Power Failure Interface: The Key Service Unit pro-
vides an interface for a dedicated backup standard
telephone during a power failure. If the system
power fails, the backup telephone will automatically
connect to the CO1 line. This feature is indepen-
dent of the HPFB.
Music-on-Hold Interface: Customers can connect
their own Music-on-hold source to this interface.
The source can also feed external page speakers
and telephone speakers with Background Music.
Paging Interface: This 600-ohm interface can sup-
port a Toshiba external speaker (HESB) or a cus-
tomer-supplied amplifier and speaker for Paging,
night ringing, and Background Music applications.
Flexible Relay Contact: A relay contact can be pro-
grammed to either mute Background Music during
a page announcement over external speakers, 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.
Conference Interface (QCNU): The standard, facto-
ry-installed QCNU provides two conference circuits
which provide for simultaneous conversation
between stations and/or CO lines connected to the
DK8. The first conference circuit allows simultane-
ous conversation between four parties; the second
circuit supports three parties.

STRATA DK8 OPTIONAL PCBS

Auto Attendant Feature Key (QKYS1): The QKYS1
plugs into the QRCU2A (not QRCU1) card to
enable support of Built-in Auto Attendant.
CO Line/Digital Telephone Interface Unit (QCDU):
The QCDU provides one CO line circuit and two
digital telephone circuits.
The CO line circuit offers all of the features that the
Key Service Unit CO line circuits provide, and the
digital telephone circuits can support every periph-
eral (except DDCB) that the Key Service Unit digi-
tal circuits can support. Up to two QCDU units may
be installed.
Standard Telephone Interface Unit (QSTU): The
optional QSTU provides two 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
QRCU 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
•
Off-premises Stations
•
Voice Mail Devices
•
Auto Attendant Devices
•
Auto Attendant Digital Announcers
DTMF/ABR Tone Detection Receiver (QRCU): Sta-
tion users in systems that have the optional QRCU
installed can access Automatic Busy Redial (ABR)
and communicate with devices, such as standard
telephones or voice mail machines, that require
Dual-tone Multi-frequency (DTMF) signaling. This
unit is also required for Direct Inward System
A U G U S T 1 9 9 3
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