Pcb Option Considerations; Pcb Installation Power Supply Considerations; Common Control Unit (Pctu Or Pctusl); General - Toshiba STRATA DK24 Manual

INSTALLATION-PCB
SECTION 200-096-206
FEBRUARY 1991
NOTE:
For initial system programming, install an
electronic telephone station PCB (PEKU) in
slot 01, and connect a ZO-button LCD elec-
tronic telephone to port 05. It is suggested that
a live telephone not be connected to port 05 to
avoid accidentally entering the programming
mode.
2.40 PCB Option Considerations
2.41
STRATA DK PCBs may be configured for a
variety of hardware and software options. Hard-
ware options are defined as either internal (gener-
ally related to optional PCB subassemblies) or
external (related to connection of peripheral equip-
ment such as background music, voice mail, etc).
Hardware and software options for each PCB are
identified in the individual PCB installation proce-
dures in this chapter.
2.42 PCB Hardware Options.
Each PCB must be
configured for the applicable hardware options
prior to installation of the PCB in the KSU. Configu-
ration instructions for internal hardware options are
provided in the individual PCB installation proce-
dures in this chapter. Configuration instructions for
external hardware options are provided in Periph-
eral Installation, Section 200-096-208.
2.43 PCB Software Options.
PCBs are config-
ured for software options through programming,
after installation of the PCBs in the KSU. A pro-
gramming overview for each PCB is provided in the
individual PCB installation procedures in this chap-
ter. Refer to the Programming Procedures, Section
200-096-300, for detailed programming instruc-
tions.
2.50 PCB Installation Power Supply Consid-
erations
2.51
Whenever removing or installing PCBs, ob-
serve the following requirements:
1) The power supply
must
be OFF whenever
removing or installing the PCTU PCB.
2) It is recommended that the power supply be
OFF, whenever possible, when removing or
installing PEKU, PSTU, PESU, PCOU, PEMU,
PIOU, PIOUS, and PEPU PCBs.
3 COMMON CONTROL UNIT
(PCTU OR PCTUSI)
3.00 General
3.01
The Common Control Unit (PCTU) PCB pro-
vides centralized control for the KSU. The PCTU
incorporates a 68000-type microprocessor and
contains custom time switch and conference LSI
circuitry. One PCTU must be installed in STRATA
DK24, DK56, and DK96 models.
3.02 There are three PCTU versions (PCTUI ,
PCTU2, and PCTUSI). The capacity and/or func-
tion of each PCTU model is different, so it is
important to use the correct PCTU in each DK
system.
3.03 PCTUl/PCTU2isintendedforusewith DK56/
96, but may also be used in DK24. The PCTUSl
may
only
be used in DK24. The detailed differ-
ences between the PCTU versions aredescribed in
Paragraph
6.10
and Table 2-B of Section 200-096-
202.
NOTE:
Any further reference to the PCTU in this
section applies to PCTUl, PCTUZ, AND
PCTUSI.
3.04 The PCTU may be equipped with an optional
4- or 8-circuit DTMF receiver (CRCU-4 or CRCU-
8), allowing the PCTU to receive tone dialing.
DTMF signals transmit from DISA, CO lines, TIE
lines and PSTU/PESU standard ports, and the
PCTU converts these signals to digital data for the
STRATA DK system CPU.
3.05 PCTU and PCTUSI controls, indicators, and
interface connectors are shown in Figures 6-1 and
6-2 and described in Table 6-A.
3.10 PCTU Hardware Options
3.11
The PCTU supports the following hardware
options:
-:
6-2