5. LED Indicators
LED | Label | Description |
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10/100 | LNK/ACT | On | Link up |
Ethernet |
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| Off | Link down | |
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| Flash | Sending/Receiving |
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| data packets |
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| 100Mbps | On (LNK is on) | 100Mbps |
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| Off (LNK is on) | 10Mbps |
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LOOP/RING | FXS | On | Off hook |
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| Off | On hook |
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| Flash | Ringing out |
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| FXO | On | Line is active |
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| Off | Line is inactive |
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| Flash | Ringing in |
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Device | Alarm | The red light “On” indicates that system has | |
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| some problem; please contact your vender. | |
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| Power | “On” indicates that the power supply is | |
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| working normally. |
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| CPU/ACT | “On” indicates that the CPU is working | |
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| normally. |
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| Registered | “On” indicates that all SIP entities are | |
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| registered successful. | |
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| “Off” indicates that all SIP entities are | |
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| registered fail. |
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| “Flash” indicates that one of these SIP | |
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| entities is registered fail. | |
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| STUN | “On” indicates communicate with STUN | |
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| Server once. |
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| “Off” indicates never communicate with | |
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| STUN Server. |
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