
BACKPLANE
23.4.1 PRIMARY PCM
The normal jumper connection is shown in paren- thesis.
1.J9 (pin 1 to J10, pin 1/pin 2 to J10, pin 2)
•Pin 1 - Input
•Pin 2 - Output
•Pin 3 - Input
•Pin 4 - Output
2.J10 (pin 1 to J9, pin 1/pin 2 to J9, pin 2)
•Pin 1 - Primary Tx PCM
•Pin 2 - Primary Rx PCM
•Pin 3 - Primary Rx PCM
•Pin 4 - Primary Tx PCM
3.J15 (pin 2 to J16, pin 2)
•Pin 1 - Input
•Pin 2 - Input
•Pin 3 - Input
4.J16 (pin 2 to J15, pin 2)
•Pin 1 - Output
•Pin 2 - Input
•Pin 3 - Output
S7 SEC RX PCM S8 SEC TX PCM
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| S6 MASTER CLOCK | |||||
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| J15 | 1 |
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J17 | 1 |
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SEC PCM |
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J18 | 1 |
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SWITCH SETTINGS ARE FOR A |
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23.4.2 SECONDARY PCM
The normal jumper connection is shown in paren- thesis.
1.J17 (pin 1 to J18, pin 1/pin 2 to J18, pin 2)
•Pin 1 - Output
•Pin 2 - Input
•Pin 3 - Input
•Pin 4 - Output
2.J18 (pin 1 to J17, pin 1/pin 2 to J17, pin 2)
•Pin 1 - Output
•Pin 2 - Input
•Pin 3 - Input
•Pin 4 - Output
O
N
1
2 



3
4
5 

6 

7 


8
FigureS5 MASTER SYNC |
| S2 VTM PCM | S3 PRI TX PCM | ||||||||||||||||||||||
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| PRI Tx/Rx PCM |
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| J9 |
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MASTER SYNC | J10 |
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| S4 PRI RX PCM | ||||||||||||||
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J12 |
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| J7 |
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J11 | 1 |
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| 1 | J8 |
| 3 |
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MASTER CLOCK |
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| VTM |
| 4 |
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J13 |
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J14 |
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