Interpreting Adapter LEDs
The following table describes the adapter status when the sequence of LEDs appears as follows:
LED1 | LED2 | LED3 | LED4 | Meaning |
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On | On | Off | Off | Adapter is operational. |
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On | Off | On | On | Your E1/PRI line does not support |
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| CRC4 functionality. Deselect the CRC4 |
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| option. (See Setting Up ISDN PRI Port |
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On | Off | On | Off | Remote Alarm Indication (RAI). Your |
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| ISDN provider has synchronization |
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| problems and is reporting this problem |
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| to you. |
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On | Off | Off | On | Your E1/PRI line does not support |
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| CRC4 functionality. Deselect the CRC4 |
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| option. (See Setting Up ISDN PRI Port |
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| |
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Off | Off | Off | Off | No electrical signal is on the E1/PRI |
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| line. Make sure your cable is plugged in |
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| correctly. |
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France
In France, the adapter LEDs for each port function are as follows:
LED | Color | Meaning when the light is ON... |
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1 | Green | Clock is synchronized. |
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2 | Green | Physical layer is active. |
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3 | Yellow | Your ISDN provider is currently sending an RAI alarm |
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| to the adapter. |
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4 | Red | No meaning. |
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70 | Interphase Corporation |