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INSTALLATION-PCB
SECTION 200-096-206
FEBRUARY 1991
2)
3)
4)
5)
Mate the EOCU connectors
JIO, 520, J40, J50,
and J60 with the PESU connectors
PI 0, P20,
P40, P50,
and P60 (refer to Figure 6-7).
Apply firm, even pressure to the EOCU to
ensure proper mating of connectors.
Use 3-pair cable for connecting the PESU and
the OCA electronic telephone (refer to Wiring
Diagrams, Section 200-096-209, for wiring/
interconnecting details).
Refer to Telephone Installation, Section 200-
096-207, for procedures to add OCA to elec-
tronic telephones.
6.20 PESU Installation Procedures
6.21 Install the PESU in accordance with the fol-
lowing steps:
1)
2)
3)
4)
5)
6)
7)
Remove the PCB from its protective packag-
ing. The protective shield on the back of the
PESU is designed to protect the installer from
potentially hazardous ring voltage. Do not
remove this shield.
Ensure that the PESU subunit (ESTS) is se-
curely attached to the PESU (refer to Figure 6-
7).
If the electronic telephones connected to the
PESU must receive OCA calls, install the
EOCU subassembly PCB on the PESU per
Paragraph 6.12.
If an HDCB is connected to PESU circuits, cut
w9.
If BGM is connected to port 07, circuit 8, slot
01, cut w7.
Ensure that the ring voltage option,
P90,
is set
to the “H” position for initial installation. The “L”
position is used if devices connected to the
PESU trip ring voltage before answer.
Insert the PESU into the appropriate slot, and
apply firm, even pressure to ensure proper
mating of connectors.
:. \
8) After installing the PESU, gently pull the PCB
outward. If the connectors are properly mated,
a slight resistance will be felt.
6.30 PESU Wiring
6.31
Refer to PESU Wiring Diagram, Section 200-
096-209, for wiring/interconnecting details.
6.40 PESU Programming Overview
.’
6.41 The following parameters may be specified,
through programming, for the PESU:
Program 03
Specify code 25 for all slots that have PESUs
without EOCU.
Specify code 26 for all slots that have PESUs
equipped with EOCU.
NOTE:
A special code is not required to connect an
HDCB or BGM to a PEW.
Program 31
l
Configures the PESU circuits 1 and 2forconnec-
tion to Voice Mail or Auto Attendant devices.
Program 1 O-2
l
Sets the standard telephone ring cadence for
normal or distinctive ringing and BGM source
connection.
Programs 77-1 and 77-2
l
Assigns an HDCB to a PESU port
7 CO LINE UNIT (PCOU)
7.00 General
7.01 Each CO Line Unit (PCOU) PCB adds four
CO lines to the system. The PCOU provides Ring
Detection, Dial Outpulsing and Hold; as well as
Automatic Busy Redial circuitry. Each CO line can
be programmed for DTMF or dial pulse. Depending
on system configuration, DK24 can support up to
four PCOUs, DK56 up to five, and DK96 up to nine.
NOTE:
There are two PCOU versions (1 and 2). They
are identical in fit/form/function and are inter-
changeable in all DK system models.
.:
6-14