Slots for programming purposes
72
MODEM | TERMINAL TERMINAL TERMINAL | TERMINAL | SWITCH | SWITCH | DEVICE | DEVICE | DEVICE | DEVICE | DEVICE | DEVICE | DEVICE | DEVICE | CONTROL | ||
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0 |
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| A | A | A | A |
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| A | A | A | A | A | A | A | A | A |
| B | B | B | B |
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| B | B | B | B | B | B | B | B |
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| C | C | C | C |
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| C | C | C | C | C | C | C | C |
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I |
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0 |
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| D | D | D | D |
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| D | D | D | D | D | D | D | D | B |
