Instruction manual

Installation
66 025-9416
25-pair cable
(Part No.
709-0004)
To Model 640
RJ21 interface
(See Figure 5-6)
R
J
2
1
R
J
2
1
26
1
27
2
28
3
29
4
30
5
31
6
32
7
33
8
34
9
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40
15
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16
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17
43
18
44
19
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20
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21
47
22
48
23
49
24
50
T1
R1
T2
R2
E
M
T1
R1
T2
R2
E
M
T1
R1
T2
R2
E
M
T1
R1
T2
R2
E
M
G
telco wiring
TRUNK A
TRUNK B
TRUNK C
TRUNK D
Model 640 Interface Punchdown Block
REC AUDIO LO
REC AUDIO HI
XMIT REQUEST
DIGITAL MODE
XMIT AUDIO LO
XMIT AUDIO HI
BUSY
COR/CAS
DIG DATA
GND
ANA PTT NO
ANA PTT COM
DIG PTT NC
ANA PTT NC
DIG PTT NO
DIG PTT COM
ZONE ADR 4
ZONE ADR 8
ZONE ADR 1
ZONE ADR 2
AUX PTT NC
AUX PTT NO
GND
AUX PTT COM
Figure 28. Punchdown Block Radio Connections
RF EQUIPMENT INTERFACING
The Model 640 provides complete radio station interface flexibility. As a result, many manufac-
turers and types of RF equipment can be connected to the paging terminal. The radio station
output of the Model 640 allows three basic transmitter configurations:
• local transmitter
• remote transmitter(s)