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The NX-308 system is equipped with a standard Amphenol connector, and its connections are shown in
the following table. All the necessary Station connections may be accomplished through this
connector.
The PSTN lines are connected to a customer-supplied LJU via the line cords supplied with the system.
Amphenol
Connector
Colour
Pin No.
26
1
WH
27
2
WH
28
3
WH
29
4
WH
30
5
WH
31
6
RD
32
7
RD
33
8
RD
34
9
RD
35
10
RD
36
11
BK
37
12
BK
38
13
BK
39
14
BK
40
15
BK
41
16
YL
42
17
YL
43
18
YL
44
19
YL
45
20
YL
46
21
WH/BL
47
22
WH/BL
48
23
WH/BL
49
24
WH/BL
50
25
WH/BL
Note: Stations 3 to 8 can be configured as keysets or single line telephones (SLTs).
When connecting SLTs to the system the Data pairs are not required (shown in brackets in the table),
However the Tip and Ring pair need to be connected to LJU Pins 2 and 5.
16
Connection Table
LJU
Pins
BL
Reserved
OR
Reserved
GR
Reserved
BR
Reserved
SL
Ext. Music Source
BL
Ext. Page
OR
4
3
Station 1
GR
5
2
(Keyphone only)
BR
4
3
Station 2
SL
5
2
(Keyphone only)
BL
4
3
Station 3
OR
5
2
GR
4
3
Station 4
BR
5
2
SL
4
3
Station 5
BL
5
2
OR
4
3
Station 6
GR
5
2
BR
4
3
Station 7
SL
5
2
BL
4
3
Station 8
OR
5
2
GR
L1 L2
Door phone
BR
P- P+
SL
Door lock
Figure 3 - KSU Connection Table
Connections
Tip,
Ring
(No polarity)
Data - Data +
(No polarity)
Tip,
Ring
(No polarity)
Data - Data +
(Polarity)
Tip,
Ring
(No polarity)
Data - Data +
(Polarity)
Tip,
Ring
(No polarity)
[Data - Data +]
(Polarity)
Tip,
Ring
(No polarity)
[Data - Data +]
(Polarity)
Tip,
Ring
(No polarity)
[Data - Data +]
(Polarity)
Tip,
Ring
(No polarity)
[Data - Data +]
(Polarity)
Tip,
Ring
(No polarity)
[Data - Data +]
(Polarity)
Tip,
Ring
(No polarity)
[Data - Data +]
(Polarity)
Tip,
Ring
(No polarity)
GND, Power
(Polarity - Caution)
L1,
L2
(No polarity)
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