Instruction manual

Strata DK40i
Base KSU Architecture
10 Strata DK General Description 6/00
Base KSU Architecture
The Strata DK40i Base KSU contains the main processor, operating software, circuitry and the
following components (see Figure 6).
Figure 6 Base KSU Interior
Digital Telephone Circuits
The main circuit board (TMAU2) in the Strata DK40i Base KSU has eight integrated circuits that
can connect to Toshiba-proprietary digital telephones (including the cordless telephone), Stand-
alone Data Interface Units (PDIU-DSs), Digital Door Phone/Lock Control Units (DDCB), and
Digital Direct Station Selection Consoles (DDSS).
Furthermore, each of the digital telephones can support a PC Data Interface Unit (RPCI-DI) or up
to two Add-on Modules (DADMs).
Central Office (CO) Line Circuits (TCOU/TDDU/TBSU/TBUU)
The following PCBs can be installed in the DK40i Base KSU:
♦ TCOU provides four circuits for loop start CO lines.
♦ TDDU provides four circuits for Direct Inward Dialing (DID) lines
♦ TBSU provides two circuits for BRI lines or stations (see TBSU below)
♦ TBUU provides two BRI U interface circuits for lines or stations
FG2
POWER SUPPLY ASSEMBLY
MODEL
INPUT: AC127V 2.2A 60 HZ
OUTPUT: -27.3V 2.8A. -27.3V 0.2A
V. 1A 1996-05 00001
TOSHIBA CORPORATION
TPSU16A
MADE IN
WARNING
Hazardous voltage inside!
If servicing required
remove A. C. plug.
12
+
-
BATT
PN2
12
AC DC
DC POWER
TMAU2A
OFF
ON
4238
Connect Expansion
Unit TB1 TO FG2
Expansion KSU
Cable Receptacle
Important Notice
Battery Jumper
-24 Volt Circuit
Breakers
Reserve Power
Battery Jack
Base Telephone
Tip/Ring and
Relay Contact
Music-on-Hold
Input
Music-on-Hold
Sensitivity Adjustment
IMPORTANT: DKSUE16A is incompatible with this unit
DKSUET16A or DKSUE40A is required for expansion