•If there is no line signal, the DSL LED is off.
•If line is handshaking, the DSL LED is blinking.
•If the line is up and running, the DSL LED is lit. The yellow Alarm LED indicates alarm situation.
•If there is no alarm situation, the LED is off.
•The Alarm LED is lit for instance if:
•no line signal or handshaking is ongoing or too high bit error ration (BER).
•no E1 data signal or framing error or too high bit error ration (BER).
For more information see the Maintenance chapter.
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