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Interpreting LEDs
E1/PRI Interface With CRC4
On cards with an E1/PRI interface and CRC4 (most European
countries other than France), the LEDs for each port function
as follows:
LED
Color
Green
1
Green
2
Yellow
3
Red
4
In their operational state, the LEDs are as follows:
LED
Color
Green
1
Green
2
Yellow
3
Red
4
The following table describes the board status when the
sequence of LEDs appears as follows:
LED1
LED2
On
On
On
Off
120
Meaning if the LED is ON...
Clock is synchronized.
Physical layer is active.
Your ISDN provider is sending an RAI alarm to the
board.
Error: CRC4 not found.
State must be...
On
On
Off
Off
LED3
LED4
Off
Off
On
On
Meaning
Board is operational.
Your E1/PRI line does not support
CRC4 functionality. Deselect the CRC4
option. (See
Setting Up ISDN Port
Properties on page
80.)
Interphase Corporation
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