Strata Dk16 Base Key Service Unit Interior; (Connectors And Interfaces) - 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
CONNECTOR CONNECTOR
TO TO K4RCU
SW1 MEMORY
BATTERY
BACKUP STRAP
CONNECTOR
TO KSTU
KSTU
FEATURE
CARTRIDGE (KFCU)
Figure 10
STRATA DK16 BASE KEY SERVICE UNIT INTERIOR (CONNECTORS AND INTERFACES)
unit (DDCB), and a digital direct station selection
console (DDSS). Furthermore, each of the digital
telephones can support an integrated data inter-
face unit (PDIU-DI) or an add-on module (ADM).
CO Line Circuits: Four 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 ±5VDC
and -24VDC for the entire system, even in its
expanded configuration. Two customer-supplied
12-volt batteries can be connected to the power
supply to maintain normal operation during a
PULL
LOCK
PUSH
UNLOCK
AC
POWER
KRCU
BATTERY BACKUP
BATT
INTERFACE
±
POWER
DC
SUPPLY
K4RCU
CO4
CO3 MODULAR
CONNECTORS
CO2
CO1
PFT
MODULAR
CONNECTOR
600 OHM
PAGE RCA JACK
AMPHENOL CONNECTOR FOR
DIGITAL AND STANDARD TELEPHONES
CONNECTOR TO KSTU
power failure. The power supply provides a built-in
charger for the batteries (Table G).
Power Failure Interface: The Base Key Service Unit
provides an interface for a dedicated backup stan-
dard telephone during a power failure. If the sys-
tem power fails, the backup telephone will auto-
matically connect to the CO1 line. This feature is
independent of Battery Backup.
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
and Background Music applications.
A U G U S T 1 9 9 3
MUSIC-ON-HOLD
VOLUME CONTROL
MUSIC-ON-HOLD
RCA JACK
9