Interphase-tech RAS Communications Controller 5536 Manual do Utilizador Página 141

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Chapter 8: Troubleshooting
5536 PRI RAS Communications Controller Users Guide 121
E1/PRI Interface Without CRC4
On cards with an E1/PRI interface and no CRC4 (France), the
LEDs for each port function as follows:
In their operational state, the LEDs are as follows:
On Off On Off Remote Alarm Indication (RAI). Your
ISDN provider has synchronization
problems and is reporting this problem
to you.
On Off Off On Your E1/PRI line does not support
CRC4 functionality. Deselect the CRC4
option. (See Setting Up ISDN Port
Properties on page 80.)
Off Off Off Off No electrical signal is on the E1/PRI
line. Make sure your cable is plugged in
correctly.
LED Color Meaning when 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 No meaning.
LED Color State must be...
1 Green On
2 Green On
3 Yellow Off
LED1 LED2 LED3 LED4 Meaning
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