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| Chapter 4. Status |
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| Condition | Description |
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| Blue (AIS) | The unit is receiving a blue alarm condition from |
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| the network. A blue alarm occurs when consecu- |
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| tive 1010s are received in the information bits. |
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| This indicates that there is a transmission fault lo- |
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| cated either at or upstream from the transmitting |
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| terminal. |
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| OOF | The unit detects an out of frame condition from the |
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| network. |
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| Idle | The unit detects an idle sequence from the net- |
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| work. Service is immediately available for use. |
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Data Link State
This field displays the current state of the data link between the local and the remote T3SU 300s. Possible states are listed in the following table:
Condition | Description |
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Normal | The local unit’s data link is in sync with the remote |
| unit. |
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Disabled | The DATA LINK option in the DS3 NETWORK |
| CONFIGURATION menu is set to DISABLED. |
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Down | The local and remote units are not in sync. |
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Remote State
This field displays the current state of the remote link. Possible states are listed in the following table:
T3SU 300 User Manual |