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| 3.5 Information about the Physical Trunk Cards |
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| Indication | Colour | Description |
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| LINE 8 | Green | Line status indication (LINE 1 to LINE 8): |
| LINE 7 |
| Refer to "LINE LED Pattern" below for details. |
| LINE 6 |
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| Note | |
| LINE 5 |
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| LINE 4 |
| LINE 5 to LINE 8 are for BRI8 card only. |
| LINE 3 |
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| LINE 2 |
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| LINE 1 |
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LINE LED Pattern
Layer 1 | Layer 2 | Master Clock |
| LED Pattern | ||
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OFF | OFF | OFF | 1 s | |||
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ON
OFF
OFF
1 s
ON
ON
OFF
1 s
ON
OFF
ON
1 s
ON
ON
ON
1 s
Layer 1: ON (Synchronous)
Layer 2: ON (Link established)/OFF (Link not established)
Master Clock: ON (Master)/OFF (Slave)
