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3000 Series User Guide 41
SDSL Module
This module has three amber status lights.
Light Indicates . . .
ALM
Alarm condition indicating a loss of communication
between the SDSL module and the host processor.
TST
Module is in loopback test mode.
LOS
Loss of sync indicating that the module is not activated
with the DSLAM (Digital Subscriber Loop Access
Multiplexor).
ALM
SDSL
TST
LOS