Table 1 | LEDs |
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Feature Card | LED |
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T1 or E1 |
| ACTIVITY (ACT) | Fast flicker (green) | The feature card is up and running. | |
feature card |
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| Slow flicker (green) | The feature card is not yet fully functional. | |
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| OK/MAINT | Green | The feature card has passed initial | |
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| and is operating normally. |
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| Yellow | • The feature card is busied out, but there are active calls. |
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| Once all the calls are terminated the feature card will be |
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| powered off. |
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| • The feature card is not functioning correctly. |
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| Off | All calls associated with the card have been shut down, and it |
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| is safe to remove the card with the system powered on. |
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| • | Remote Alarm | On (yellow) | One LED below each T1/E1 port indicates one of the |
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| (RA) |
| following: |
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| • | Local Alarm (LA) |
| • A local or remote loopback diagnostic test is running on |
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| • | Loopback (LB) |
| the associated T1 port. |
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| • An alarm has been received on the associated T1/E1 port, |
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| indicating loss of signal (LOS) or loss of multiframe |
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| alignment (LOF) at the local or remote node. |
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