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Toshiba Strata Dk14, Dk40i, Dk424 Installation And Maintenance Manual

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    							DK40i/DK424 Universal Slot PCB Wiring
Digital Station Wiring
Strata DK I&M    5/998-7
DK40i/DK424 Universal 
Slot PCB Wiring
Figure 8-6 RDSU Wiring
1
2
3
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5
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501
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45
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47
48
49
50W-BL
BL-W
W-O
O-W
W-GN
GN-W
W-BR
BR-W
W-S
S-W
R-BL
BL-R
R-O
O-R
R-GN
GN-R
R-BR
BR-R
R-S
S-R
BK-BL
BL-BK
BK-O
O-BK
BK-GN
GN-BK
BK-BR
BR-BK
BK-S
S-BK
Y-BL
BL-Y
Y-O
O-Y
Y-GN
GN-Y
Y-BR
BR-Y
Y-S
S-Y
V-BL
BL-V
V-O
O-V
V-GN
GN-V
V-BR
BR-V
V-S
S-V26
1
27
2
28
3
29
4
30
5
31
6
32
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33
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18
44
19
45
20
46
21
47
22
48
23
49
24
50
25Bridging Clips To RDSU W/Female
Connector
25-Pair Cable With Male Amp Connector
66M150  SPLIT BLOCK
Tip 1
Ring 1
GN
Y
BL R
BK
W
654321
654321
Voice Mail Port Or
Similar Device
Voice Mail Port Or
Similar Device
RJ11
RJ11
RINGTip
TIPRing
Standard Telephone 2Standard Telephone 1
Ring 2Tip 2
GN
Y
BL R
BK
W
Not Used Station Cabling Jacketed Twisted Pairs (24 AWG)
T3
R3
T4
R4Not Used
Not UsedStandard 
Telephone 
Circuits 3 and 4 
available with 
optional RSTS 
PCB.
Wire the same 
as Circuits 1 
and 2.
Circuit 6 to DKT 6
or PDIU-DS
Circuit 7 to DKT 7
or PDIU-DS
Circuit 5 to DKT 5
or PDIU-DS
or DDCB T5
R5
PT5
PR5
T6
R6
PT6
PR6
T7
R7
PT7
PR7
(-)          T8 (Voice/Data)
(GND)   R8 (Voice/Data)
(-)          PT (Add Power)
(GND)   PR (Add Power)
Not Used
GN
654321Y
BLR
BK
W
34
R8
PT8T8
PR8
25
PR    TR    PT
RJ11
Digital 
Telephone 
Modular
Cord
GND
PR(-)
TGND
R(-)
PT
(See Note)
DPFT
Power Failure
Transfer Box
(J1)
-24VDC
(J1, 25) DG
(J1, 50)
DG
-24V
1603
CAUTION!To prevent system malfunction, DO NOT install the RDSU in 
Slot 18 of the DK40i system.
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    							DK40i/DK424 Universal Slot PCB Wiring
Digital Station Wiring
8-8Strata DK I&M    5/99
NoteIndicate if standard telephone, voice mail port, etc.
Figure 8-7 RDSU Station MDF Cross Connect RecordMDF Block Number KSU Slot Number
Color CodeDesignationCKT 
NumberPort 
NumberDirectory 
NumberDevice/Standard Telephone/
Electronic Telephone Location
W-Bl T
1 (Standard) Bl-W R
W-O Not Used
O-W Not Used
W-G T
2 (Standard)Indicate if separate BGM source 
connected to Circuit 2. G-W R
W-Br Not Used
Br-W Not Used
W-S T
3(Standard)
(RSTS) S-W R
R-Bl Not Used
Bl-R Not Used
R-O T
4(Standard)
(RSTS) O-R R
R-G Not Used
G-R Not Used
R-Br T
5(Digital)DDCBs connect only to Circuit 5, Ports 
004, 012, 020, and 028 Br-R R
R-S PWRT
S-R PWRR
Bk-Bl T
6(Digital) Bl-Bk R
Bk-O PWRT
O-Bk PWRR
Bk-G T
7(Digital) G-Bk R
Bk-Br PWRT
Br-Bk PWRR
Bk-S T
8(Digital) S-Bk R
Y-Bl PWRT
Bl-Y PWRR
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    							DK40i/DK424 Universal Slot PCB Wiring
Digital Station Wiring
Strata DK I&M    5/998-9
DK40i/DK424 Universal 
Slot PCB Wiring
Electronic Station Wiring Diagrams 
Figure 8-8 MDF Wiring/Electronic Telephone to PEKU
Notes
• To receive OCA, the 6500-series electronic 
telephone must have an HVSU2 or the combined 
HVSI and HVSU installed.
• Program 31, button/LED 03 must be ON for 
electronic telephone to receive OCA.
• An HHEU must be installed inside 6500-series  
electronic telephones for headset or HESB, Loud 
Ringing Bell option.
• All cable 24 AWG, max 40 ohm loop resistance 
from PEKU to electronic telephone (1000 ft).
1578
Electronic Telephone
Circuit 2
Circuit 3
Circuit 4
Circuit 5
Circuit 6
Circuit 7
Circuit 8
Not Used
Circuit 5
Circuit 6
Circuit 7
Circuit 8
OCA T1 (OT)
OCA R1 (OR)Modular
Cord
Only if Electronic Telephone
Receives Off-Hook Calls
66M150 Split Block
25-Pair Cable w/Male amp Connector
1
2
3
4
5
6
7
8
9
10
11
12
13
14
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30
31
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40
41
42
43
44
45
46
47
48
49
501
2
3
4
5
6
7
8
9
10
11
12
13
14
15
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18
19
20
21
22
23
24
25
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27
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29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50 W-BL
BL-W
W-O
O-W
W-GN
GN-W
W-BR
BR-W
W-S
S-W
R-BL
BL-R
R-O
O-R
R-GN
GN-R
R-BR
BR-R
R-S
S-R
BK-BL
BL-BK
BK-O
O-BK
BK-GN
GN-BK
BK-BR
BR-BK
BK-S
S-BK
Y-BL
BL-Y
Y-O
O-Y
Y-GN
GN-Y
Y-BR
BR-Y
Y-S
S-Y
V-BL
BL-V
V-O
O-V
V-GN
GN-V
V-BR
BR-V
V-S
S-V26
1
27
2
28
3
29
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30
5
31
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32
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33
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34
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41
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42
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45
20
46
21
47
22
48
23
49
24
50
25VT
VR
DT
DR
VT
VR
DT
DR
VT
VR
DT
DR
VT
VR
DT
DR
VT
VR
DT
DR
VT
VR
DT
DR
VT
VR
DT
DR
OT
OR
OT
OR
OT
OR
OT
OR
OT
OR
OT
OR
OT
OR
Bridging
Clips To PEKU
w/Female
Connector
Circuit 2
Circuit 3
Circuit 4 Voice T1 (VT)
Voice R1 (VR)
Data T1 (DT)
Data R1 (DR)Jacketed Twisted Pairs
24 AWG
Station Station Cabling
OCATOCAR
GN
654321Y
BL R
BK
W
123456
DTDR VR VT
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    							DK40i/DK424 Universal Slot PCB Wiring
Digital Station Wiring
8-10Strata DK I&M    5/99
1579
Notes
• Place PEKU SW1 to HDSS.
• All cable 24 AWG max loop resistance:  20 ohms from 
PEKU to HDSS (500 ft).
• See Program 29 to assign HDSS feature buttons.
• See Program 28 for telephone to HDSS assignments.
GN
654321Y
BLR
BK
W
123456
654321
2345
X
Y
XY
66M150 Split BlockCircuit 2
Circuit 3
Circuit 4
Circuit 5
Circuit 6
Circuit 7
Circuit 8
Not Used
Modular
Cord
DSS Console
DSS
EKT
SW1
Circuits 7 & 8 T/R
pair order must be 
wired as shown. Only if 
Electronic
Telephone
Receives 
Off-Hook Calls
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
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27
28
29
30
31
32
33
34
35
36
37
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39
40
41
42
43
44
45
46
47
48
49
501
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50 W-BL
BL-W
W-O
O-W
W-GN
GN-W
W-BR
BR-W
W-S
S-W
R-BL
BL-R
R-O
O-R
R-GN
GN-R
R-BR
BR-R
R-S
S-R
BK-BL
BL-BK
BK-O
O-BK
BK-GN
GN-BK
BK-BR
BR-BK
BK-S
S-BK
Y-BL
BL-Y
Y-O
O-Y
Y-GN
GN-Y
Y-BR
BR-Y
Y-S
S-Y
V-BL
BL-V
V-O
O-V
V-GN
GN-V
V-BR
BR-V
V-S
S-V26
1
27
2
28
3
29
4
30
5
31
6
32
7
33
8
34
9
35
10
36
11
37
12
38
13
39
14
40
15
41
16
42
17
43
18
44
19
45
20
46
21
47
22
48
23
49
24
50
25
25 Pair Cable w/Male amp Connector
Circuit 6
OCA T1
OCA R1
Modular
CordStation
Electronic
Telephone
Associated 
with HDSS
Data Tip 8
Data Ring 8 Voice Pait - Not Used
Circuit 8Voice Pait - Not Used
Circuit 7
Data Tip 7
Data Ring 7
GN
Y
BL R
BK
W T7 R8
T8
R7 Circuit 2
Circuit 3
Circuit 4
Circuit 5
Jacketed
Station Cable
Twisted Pair
24 AWG
To
OCA
T1To
OCA
R1
Bridging
Clips To PEKU w/Female
Connector
Voice T1
Voice R1
Data T1
Data R1
Figure 8-9 MDF Wiring/HDSS Console and Associated EKT to PEKU
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    							DK40i/DK424 Universal Slot PCB Wiring
Digital Station Wiring
Strata DK I&M    5/998-11
DK40i/DK424 Universal 
Slot PCB Wiring
Figure 8-10 MDF Wiring-Door Phone/Lock to PEKU/PESU
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
501
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50W-BL
BL-W
W-O
O-W
W-GN
GN-W
W-BR
BR-W
W-S
S-W
R-BL
BL-R
R-O
O-R
R-GN
GN-R
R-BR
BR-R
R-S
S-R
BK-BL
BL-BK
BK-O
O-BK
BK-GN
GN-BK
BK-BR
BR-BK
BK-S
S-BK
Y-BL
BL-Y
Y-O
O-Y
Y-GN
GN-Y
Y-BR
BR-Y
Y-S
S-Y
V-BL
BL-V
V-O
O-V
V-GN
GN-V
V-BR
BR-V
V-S
S-V26
1
27
2
28
3
29
4
30
5
31
6
32
7
33
8
34
9
35
10
36
11
37
12
38
13
39
14
40
15
41
16
42
17
43
18
44
19
45
20
46
21
47
22
48
23
49
24
50
25
Bridging
Clips To PEKU or PESU
w/Female Connector
25 Pair Cable w/Male amp Connector
66M150 Split Block
Circuit 2
Circuit 3
Circuit 4
Circuit 5
Circuit 6
Circuit 7
Circuit 8
Not Used Circuit 2
Circuit 3
Circuit 4
Circuit 6
Circuit 7
Circuit 8
OCA T1
OCA R1
GN
654321Y
BLR
BK
W
2345
Modular
Cord
GN
654321Y
BLR
BK
W
34
Modular
Cord
12L1
L2
Not
Used
AB C Door Phone
MDFBHDCB
HKSU
MDFB
Door
Phone B
or Door
Lock
Control
MDFB
Door
Phone C
See Note 1
See Note 2MDFB (Rear View)
2-Pair
Modular
Cords
Voice T5
Voice R5
Data T5
Data R5Screw
Terminals
Door Phone A
Port #
004
012
020
028A
151
154
157
161B
152
155
158
162C
153
156
159
163 MDFB (Door Phone) Station Nos.
VR VT
DR DT
Circuit 1
See Note 1
Notes
1. On PEKU or PESU, cut W9. See Programs 39, 77-1, 77-2, and 79.
2. HDCB “B” output options:
SW1: Always in DOOR position.
SW2: DOOR position; “B”  connects to door phone LOCK position; 
“B” connects to door lock.
3. Door phones may be connected to Circuit 5 on Ports 004, 012, 020, 
and 028 only.
1580
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    							DK40i/DK424 Universal Slot PCB Wiring
Digital Station Wiring
8-12Strata DK I&M    5/99
Figure 8-11 MDF Wiring PEKU Background Music Connection
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
501
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50W-BL
BL-W
W-O
O-W
W-GN
GN-W
W-BR
BR-W
W-S
S-W
R-BL
BL-R
R-O
O-R
R-GN
GN-R
R-BR
BR-R
R-S
S-R
BK-BL
BL-BK
BK-O
O-BK
BK-GN
GN-BK
BK-BR
BR-BK
BK-S
S-BK
Y-BL
BL-Y
Y-O
O-Y
Y-GN
GN-Y
Y-BR
BR-Y
Y-S
S-Y
V-BL
BL-V
V-O
O-V
V-GN
GN-V
V-BR
BR-V
V-S
S-V26
1
27
2
28
3
29
4
30
5
31
6
32
7
33
8
34
9
35
10
36
11
37
12
38
13
39
14
40
15
41
16
42
17
43
18
44
19
45
20
46
21
47
22
48
23
49
24
50
25
Bridging Clips To PEKU w/Female
Connector
25-Pair Cable w/Male amp Connector
66M150 Split Block
Circuit 2
Circuit 3
Circuit 4Circuit 2 to Electronic Telephone (Port 001)
Circuit 4 to Electronic Telephone (Port 003) 
Circuit 5 to Electronic Telephone or HDCB
Circuit 6 to 
Electronic Telephone
Circuit 7 to Electronic 
Telephone or DSS
Circuit 8 to
Electronic 
Telephone
or DSS
OCA T1 (OT)
OCA R1 (or) to Electronic Telephones that receive OCA Voice T1 (VT)
Voice R1 (VR)
Data T1 (DT)
Data R1 (DR)
Station Cabling (24 AWG, Twisted Pairs)
VT2
VR2
DT2
DR2
VT3 
VR3
DT3
DR3
VT
VR
DT
DR
VT
VR
DT
DR
VT
VR
DT
DR
VT
VR
DT
DR
VT
VR
DT
DR
OT
OR
OT
OR
OT
OR
OT
OR
OT
OR
OT
OR
OT
OR
Not Used
to Electronic Telephone 1 
(Port 000)
Circuit 5
Circuit 6
Circuit 7
Circuit 8
Not Used
Background Music
Source Output
(600 OHMS; 1V RMS MAX)
1581
to Electronic Telephones
that receive OCANotes
• A separate BGM source is available.
• Program 10-2, button/LED 09  ON, for 
BGM connection.
• Program 19 for slot assignment.
• Cut W5 jumper on PEKU. 
• Provide BGM to external page with 
PIOU/PIOUS/PEPU.
• Volume is adjusted at BGM source only 
(not at PEKU).
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    							DK40i/DK424 Universal Slot PCB Wiring
Digital Station Wiring
Strata DK I&M    5/998-13
DK40i/DK424 Universal 
Slot PCB Wiring
Figure 8-12 MDF Wiring/PEKU Amplified Two-CO Line Conference
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
501
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50W-BL
BL-W
W-O
O-W
W-GN
GN-W
W-BR
BR-W
W-S
S-W
R-BL
BL-R
R-O
O-R
R-GN
GN-R
R-BR
BR-R
R-S
S-R
BK-BL
BL-BK
BK-O
O-BK
BK-GN
GN-BK
BK-BR
BR-BK
BK-S
S-BK
Y-BL
BL-Y
Y-O
O-Y
Y-GN
GN-Y
Y-BR
BR-Y
Y-S
S-Y
V-BL
BL-V
V-O
O-V
V-GN
GN-V
V-BR
BR-V
V-S
S-V26
1
27
2
28
3
29
4
30
5
31
6
32
7
33
8
34
9
35
10
36
11
37
12
38
13
39
14
40
15
41
16
42
17
43
18
44
19
45
20
46
21
47
22
48
23
49
24
50
25
Bridging
Clips To PEKU W/Female
Connector
25-Pair Cable With Male Amp Connector
66M150 Split Block
Not Used
Not Used
Not USED
VT1
VR1
DT1
DR1
VT2
VR2
DT2
DR2
VT3
VR3
DT3
DR3
VT4
VR4
DT4
DR4
VT5
VR5
DT5
DR5
VT6
VR6
DT6
DR6
VT7
VR7
DT7
DR7
VT8
VR8
DT8
DR8
OT2
OR2
OT3
OR3
OT4
OR4
OT5
OR5
OT6
OR6
OT7
OR7
OT8
OR8
Circuit 8 Circuit 7 Circuit 6 Circuit 5 Circuit 4 Circuit 3 Circuit 2 OCA T1 (OT)
OCA R1 (OR) Circuit 8 to EKT
or DSS Circuit 7 to EKT
or DSS Circuit 6 to EKT Circuit 5 to EKT
or HDCB Circuit 4 to EKT Circuit 1 to EKT
PEKU, Circuit 2 Voice Pair
PEKU, Circuit 3 Voice PairPort A (CO Side)
Port B (Subscriber side)
(See Note 2)
Customer-supplied
Two-way amplifier
or
Line repeaters (see Note 1)
To 115 VAC ± 10 VAC
System Programs
•  Program 10-3, circuit assignments:
Program 10-3
Button/LED
LED 01, ON
LED 02, ON
LED 03, ON
LED 04, ONPEKU Slot
Position
2nd
3rd
4th
5thPEKU Port
Number
A = 009
B = 010PEKU
Circuit
A = 017
B = 018
A = 025
B = 026
A = 033
B = 034CKT2
CKT3
CKT2
CKT3
CKT2
CKT3
CKT2
CKT3
1595
Notes
1. Refer to Manufacturer’s installation 
documentation for amplifier or line repeater 
pin numbering.
2. Connect to PEKU circuits only, do not connect 
to PESU, PSTU, RSTU, RDSU or PDKU 
circuits.
General Note
•   Amplifier or repeater must have automatic gain 
control and be registered FCC Part 68.
Program 10-1, button LED 19 and 20 ON.
Program 15-5, enable appropriate CO lines for 
tandem connection.
Program 78-2, enable appropriate CO lines if 
amplified DISA is required.
Program 10-2, key LED 18 and 19 ON.
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    							DK40i/DK424 Universal Slot PCB Wiring
Digital Station Wiring
8-14Strata DK I&M    5/99
Notes
1. Indicate if two-way amplifier or line repeater
2. Indicate if BGM or electronic telephone is connected (see Program 10-2 and 19); BGM connects to VT and VR, Circuit 3 only 
(DT and DR not used).
3. Indicate if electronic telephone or HDCB (allowed HDCB port numbers: 004, 012, 020, 028).
4. Indicate if electronic telephone or HDSS Console number (1~8).
Figure 8-13 PEKU Station MDF Cross Connect RecordMDF Block Number KSU Slot Number
Color CodeDesignationCKT 
NumberPort 
NumberIntercom 
NumberDevice/Standard Telephone/Electronic 
Telephone Location
W-Bl VT
1 Bl-W VR
W-O DT
O-W DR
W-G VT
2
See Note 1.
G-W VR
W-Br DT
Br-W DR
W-S VT
3
See Notes 1 and 2.
S-W VR
R-Bl DT
Bl-R DR
R-O VT
4 O-R VR
R-G DT
G-R DR
R-Br VT
5
See Note 3.
Br-R VR
R-S DT
S-R DR
Bk-Bl VT
6 Bl-Bk VR
Bk-O DT
O-Bk DR
Bk-G VT
7
See Note 4.
G-Bk VR
Bk-Br DT
Br-Bk DR
Bk-S VT
8
See Note 4.
S-Bk VR
Y-Bl DT
Bl-Y DR
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    							DK40i/DK424 Universal Slot PCB Wiring
Digital Station Wiring
Strata DK I&M    5/998-15
DK40i/DK424 Universal 
Slot PCB Wiring
Figure 8-14 PEKU Station MDF Cross Connect Record PESU Wiring Diagram
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
501
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50W-BL
BL-W
W-O
O-W
W-GN
GN-W
W-BR
BR-W
W-S
S-W
R-BL
BL-R
R-O
O-R
R-GN
GN-R
R-BR
BR-R
R-S
S-R
BK-BL
BL-BK
BK-O
O-BK
BK-GN
GN-BK
BK-BR
BR-BK
BK-S
S-BK
Y-BL
BL-Y
Y-O
O-Y
Y-GN
GN-Y
Y-BR
BR-Y
Y-S
S-Y
V-BL
BL-V
V-O
O-V
V-GN
GN-V
V-BR
BR-V
V-S
S-V26
1
27
2
28
3
29
4
30
5
31
6
32
7
33
8
34
9
35
10
36
11
37
12
38
13
39
14
40
15
41
16
42
17
43
18
44
19
45
20
46
21
47
22
48
23
49
24
50
25Bridging Clips To PESU w/Female
Connector
25-Pair Cable w/Male amp Connector
66M150  Split Block
Circuit 3 
Not Used
Circuit 4 
Not Used
Circuit 6 
to EKT  2
Circuit 8 to 
EKT 4 
or BGM 
(see Notes)
OCA T1 (OT) 5
OCA R1 (OR) 5
VT
VR
DT
DR
Tip 1
Ring 1
GN
Y
BL R
BK
W
Not UsedNot Used (Port count
in software)
654321
654321
GN
654321Y
BLR
BK
W
123456
24 
AWG
Modular
CordStation
DT
OCAT
OCARDR
VR VTRJ11
OT and OR:
Only if
EKT Receives
OCA Calls
Voice Mail Port or
Similar Device
Voice Mail Port or
Similar Device
RJ11
RJ11
VT
VR
DT
DR
VT
VR
DT
DR
OT
OR
OT
OR
OT
OR Voice T1 (VT) 5
Voice R1 (VR) 5
Data T1 (DT) 5
Data R1 (DR) 5
RingTip
TipRing
Standard Telephone 2Standard Telephone 1
Ring 2Tip 2
Circuit 7 to 
EKT 3
GN
Y
BL R
BK
W
Strap Options: 
  W9 -  Cut if HDCB is connected to Circuit 5
  P90 - Ring Voltage Option Circuit 1 & 2):
            L = Low Level (130VDC P-P)
            H = High Level (190VDC  P-P) 
Not Used
Not Used
Circuit 6
Circuit 7
Circuit 8EKT 1 or HDCB 
See Program 77-1 Station Cabling Jacketed Pairs (24 AWG)
Notes (Standard telephone circuits 1 & 2)
• All cable 24 AWG; max loop resistance - 300 ohms from PESU 
to standard telephone/VM port.
• Standard telephones may be on- or off-premises. Off-premises 
connection is made via OL13A FIC, and RJ21X jack.
• Two ringers max per port. 
1585
Notes
• Two-ringers max may be connected (high or low) to Tip/Ring.
HDSS connection is not available with PESU; HDCB may be 
connected to circuit 5, BGM to circuit 8 (see Program 77-1).
(Electronic telephone circuits 5~8)
• To receive OCA, the 6500-series EKT must  have an HVSU2 or the 
combined HVSI and HVSU installed.
• Program 31, button/LED 03 must be ON for the EKT to receive 
OCA.
• An HHEU must be installed inside 6500-series EKTs for headset or 
HESB; Loud Ringing Bell option.
• All cable 24 AWG, max 40 ohm loop resistance from PESU to 
electronic telephone (1000 ft).
CAUTION!To prevent system malfunction, DO NOT install the PESU in Slot 18 of the 
DK40i system.
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    							DK40i/DK424 Universal Slot PCB Wiring
Digital Station Wiring
8-16Strata DK I&M    5/99
1. Indicate if HDCB or electronic telephone.
2. HDSS console number 1~8 is not allowed.
3. Indicate if BGM or electronic telephone is connected; BGM connects to VT and VR, circuit 8 only (DT and DR not used).
Notes
lIndicate if standard telephone, voice mail port, electronic telephone, HDCB (allowed HDCB 
port numbers: 004, 012, 020, 028) or separate BGM source.
lOCA wiring not shown, see MDF-to-electronic telephone wiring.
Figure 8-15 PESU Station MDF Cross Connect RecordMDF Block Number KSU Slot Number
Color CodeDesignationCKT 
NumberPort 
NumberIntercom 
NumberDevice/Standard Telephone/Electronic 
Telephone Location
W-Bl T
1 Bl-W R
W-O Not Used
O-W Not Used
W-G T
2 G-W R
W-Br Not Used
Br-W Not Used
W-S Not Used
3NA NA
S-W Not Used
R-Bl Not Used
Bl-R Not Used
R-O Not Used
4NA NA
O-R Not Used
R-G Not Used
G-R Not Used
R-Br VT
5
See Note 1.
Br-R VR
R-S DT
S-R DR
Bk-Bl VT
6 Bl-Bk VR
Bk-O DT
O-Bk DR
Bk-G VT
7
See Note 2.
G-Bk VR
Bk-Br DT
Br-Bk DR
Bk-S VT
8
See Notes 2 and 3.
S-Bk VR
Y-Bl DT
Bl-Y DR
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