Interphase Tech iSPAN 5535 PRI - Manual (Page 90)

Interpreting Adapter LEDs
70 Interphase Corporation
The following table describes the adapter status when the
sequence of LEDs appears as follows:
France
In France, the adapter LEDs for each port function are as
follows:
LED1 LED2 LED3 LED4 Meaning
On On Off Off Adapter is operational.
On Off On On Your E1/PRI line does not support
CRC4 functionality. Deselect the CRC4
option. (See Setting Up ISDN PRI Port
Properties on page 56.)
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 PRI Port
Properties on page 56.)
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 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 No meaning.