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ISDN BRI Card
LEDs
LEDs
There is an LED for each ISDN BRI on a card. The function for each LED is listed
below:
State
Off
Red
Yellow
Flashing yellow
Flashing green
Green
9-8
Description
Line U-interface is attempting synchronization, or BRI is
out of service.
Line alarm (LOS or self test failure)
ES or SES has occurred.
Line U-interface is synchronized with customer equipment,
but is not passing customer data.
Line U-interface is in external loopback toward the switch at
the unit.
Normal (Line U-interface is active and transparently passing
customer data.)
Compact T1 - Release 6.1
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