Chapter 7: Troubleshooting

The following table describes the adapter status when the sequence of LEDs appears as follows:

LED1

LED2

LED3

LED4

Meaning

 

 

 

 

 

On

On

Off

Off

Adapter is operational.

 

 

 

 

 

On

On

On

Off

A synchronization problem occurred on

 

 

 

 

the ISDN carrier side.

 

 

 

 

 

Off

Off

Off

On

No power is detected on the line. Make

 

 

 

 

sure cable is plugged in correctly.

 

 

 

 

 

Off

Off

Off

Off

Your ISDN provider is currently sending

 

 

 

 

an AIS alarm to the adapter.

 

 

 

 

 

Europe (Other than France)

In European countries other than France, the adapter LEDs for each port function are as follows:

LED

Color

Meaning if the light is ON...

 

 

 

1

Green

Clock is synchronized.

 

 

 

2

Green

Physical layer is active.

 

 

 

3

Yellow

Your ISDN provider is currently sending an RAI alarm

 

 

to the adapter.

 

 

 

4

Red

Error: CRC4 not found.

 

 

 

In their operational state, the LEDs must be as follows:

LED

Color State must be...

1 Green On

2 Green On

3Yellow Off

4Red Off

iSPAN PRI PCI ISDN Users Guide

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