Toshiba Strata Dk24, Dk56, Dk96 Instruction Manual

INSTALLATION-INTRODUCTION 
SECTION 200-096-201 
FEBRUARY1991 
MDFB: 
Door Phone Box-A peripheral two-way 
speaker box option. 
OCA: Off-hook Call Announce. 
PBX: Private Branch Exchange-lndustry-stan- 
dard term which refers to a telephone switch, 
usually on-premises, which serves an individual 
company, and is connected to a public tele- 
phone exchange through the CO. 
PCB: Printed Circuit Board. 
PCM: Pulse Code Modulation-A widely used 
form of digital telephone switching. 
PCOU: CO Line Interface...

INSTALLATION-INTRODUCTION 
SECTION 200-096-201 
FEBRUARY1991 
PPTC: 
A Toshiba-supplied adapter that is used to 
connect the modular SMDR and/or maintenance 
ports of the PIOU or PIOUS to the DB-25 con- 
nector of a printer, terminal, modem or call 
accounting machine. 
PBTC: A Toshiba-supplied cable used to connect 
customer-supplied batteries to any DK PPSU 
power supply for emergency reserve power. 
PSTU: Standard Telephone Interface Unit-An 
optional PCB with built-in ring generator that 
provides...

TOSHIBASYSTEMPRACTICES 
DIGITALKEYTELEPHONESYSTEMS INSTALLATION-SYSTEM DESCRIPTION 
SECTION 200-096-202 
FEBRUARY1991 
RELEASE 1,2, and 3 
INSTALLATION 
CHAPTER TWO 
SYSTEM DESCRIPTION  

INSTALLATION-SYSTEM DESCRIPTION 
SECTlON200-096-202 
FEBRUARY1991 
TABLEOFCONTENTS 
PARAGRAPH SUBJECT 
PAGE 
1 
1.10 
2 
2.00 
2.10 
2.20 
2.30 
3 
3.10 
3.20 
3.30 
4 
4.10 
4.20 
5 
6 
6.10 
7 
8 
8.00 
8.10 
8.20 
8.30 
8.40 
9 
10 
11 
11.00 
11.10 
11.20 
11.30 
11.40 
11.50 
TABLE 
2-A 
2-B 
2-c 
2-D 
2-E 
2-F 
2-F 
2-G GENERAL ............................................................................................................... 
System Description 
.............

INSTALLATION-SYSTEM DESCRIPTION 
SECTION 200-096-202 
FEBRUARY1991 
FIGURE LIST 
I* 
FIGURE 
2-1 
2-2 
2-3 
2-4 
2-5 
2-6 
2-7 
2-8 
2-9 
2-10 
2-10 
2-11 
2-12 
2-13 
2-14 
2-15 
2-16 
2-17 
TITLE 
PAGE 
DK24/56/96 KSUs ............................................................................................... 
2-1 
DK24 KSU INTERIOR ......................................................................................... 2-2 
DK56 KSU INTERIOR...

INSTALLATION-SYSTEM DESCRIPTION 
SECTION 200-096-202 
FEBRUARY 1991 
1 GENERAL 2 SYSTEM TECHNOLOGY 
1.00 
This chapter provides a discussion of the 
technology employed in the STRATA DK system 
design, and a detailed description of the system 
hardware, including the basic equipment cabinet 
(key service unit), PCB options, and system pe- 
ripheral equipment. A description of system con- 
trols and indicators is also provided. 
1 .I 0 System Description 
1 .I 1 
A STRATA DK system consists essentially...

INSTALLATION-SYSTEM DESCRIPTION 
SECTION 200-096-202 
FEBRUARY 1991 
2.20 Stored Programming 
2.21 System Operating Software. 
System op- 
erating software is stored in ROM, and is revised 
only by Toshiba software engineers. 
2.22 Configuration and Custom Programming. 
Each system’s individual configuration and cus- 
tom programming is stored in RAM. The contents 
of system RAM is user-developed and -pro- 
grammed based on the system’s configuration 
and the user’s requirements. System RAM is pro-...

INSTALLATION-SYSTEM DESCRIPTION 
SECTION 200-096-202 
FEBRUARY1991 
. 
FlGURE2-3-DK56 KSUINTERIOR 
FIGURE Z-4-DK96 KSU INTERIOR 
2-3  

INSTALLATION-SYSTEM DESCRIPTION 
SECTION 200-096-202 
FEBRUARY 1991 
slots. These slots are labeled PCTU and SO1 w 
S08; only the PCTU slot serves a dedicated func- 
tion. 
3.22 Each PCB slot (SO1 N S08) incorporates a 
standard 40-pin female connector located in the 
same vertical position on the KSU’s backplane. 
This standardization enables any of the optional 
PCBs to be installed in any slot. The PCTU slot 
incorporates the same 40-pin female connector, 
but it is set 0.25-inch higher, so that only...

INSTALLATION-SYSTEM DESCRIPTION 
SECTION 200-096-202 
FEBRUARY1991 
l DC Voltage Output Specifications 
. -24VDC; -26.3 w -27.8 
. &/DC; +4.5 w +5.5 
. -5VDC; -4.5 N -5.5 
l Circuit Breakers 
l 24; -24V 
l 56; -24V 
l 96; -24V, +5V 
4.10 
Reserve Power 
4.11 
Twocustomer-supplied, 12-volt batteries (80 
ampere hours maximum) can be connected in 
series to the system as a power failure backup. In 
the event of a power failure, the system automati- 
cally switches over to battery power without any...