Carrier Access Network Device Axxius 800 - Manual (Page 399)

Axxius 800 - Release 2.2 9-7
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 Description
Off Line U-interface is attempting synchronization, or BRI is
out of service.
Red Line alarm (LOS or self test failure)
Yellow ES or SES has occurred.
Flashing yellow Line U-interface is synchronized with customer equipment,
but is not passing customer data.
Flashing green Line U-interface is in external loopback toward the switch at
the unit.
Green Normal (Line U-interface is active and transparently passing
customer data.)