BRTS-100 ISDN TEST SET
CHECK LOOP
Assume
1.Power good
2.LINE TEST failed
3 Test Set is in NORMAL mode
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| CHECK LOOP | |
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| PUT CIRCUIT IN | |
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| POINT TO POINT | |
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| CONFIGURATION | |
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| (CONFIG. 1) | |
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| CHECK IF TX & | |
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| RX PAIRS ARE | |
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| TRANSPOSED | |
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| SWITCH TO | |
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| REVERSE, INITIATE | |
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| LINE TEST | |
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| LINE, LINE TEST | |
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| INITIATE | |
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TX & RX | GRN | |||
PAIRS ARE |
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| TEST STATUS? | |
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TRANSPOSED |
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RED
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DONE | NORMAL |
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LINE, RECEIVE
A
Figure 4-6. Check loop flow chart (1 of 3)
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