E1/pri interface with crc4 – Interphase Tech RAS Communications Controller 5536 User Manual
Page 140
Advertising
Interpreting LEDs
120
Interphase Corporation
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:
In their operational state, the LEDs are as follows:
The following table describes the board status when the
sequence of LEDs appears as follows:
LED
Color
Meaning if the LED is ON...
1
Green
Clock is synchronized.
2
Green
Physical layer is active.
3
Yellow
Your ISDN provider is sending an RAI alarm to the
board.
4
Red
Error: CRC4 not found.
LED
Color
State must be...
1
Green
On
2
Green
On
3
Yellow
Off
4
Red
Off
LED1
LED2
LED3
LED4
Meaning
On
On
Off
Off
Board is operational.
On
Off
On
On
Your E1/PRI line does not support
CRC4 functionality. Deselect the CRC4
option. (See
Advertising