A
TROUBLE CLEARING
| This appendix contains Dual T1/PRI Network Application Card (NAC) |
| trouble clearing information. |
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|
Using the LEDs | The Dual T1/PRI NAC has six LEDs on the front panel, three per span, that |
| indicate line signal conditions. |
Span 1
Span 2
{ |
{ |
CD1
ALRM1
LPBK1
CD2
ALRM2 
LPBK2
LED | Purpose |
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|
CD1 & CD2 | Carrier Detect indicators for span lines |
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|
ALRM1 & ALRM2 | Alarm condition indicators for span lines |
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LPBK1 & LPBK2 | Loopback indicators for span lines |
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