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3-6
TC8518 Rev 2.2 User Manual
Loopback Triggers:
All Remote and Local (Ethernet, Optical, and T1/E1)
Physical Status Triggers:
Loss of Power (Power A or Power B)
Unit Temperature > 90 C
TCLE
Transmit Current-Limit Exceeded. TCLE indicates
that there is a short on the T1/E1 channel's transmit
pair. Common sources of this problem is damaged
cables or a faulty receiver at the far end.
Optical Triggers
LOS
Loss of Signal (Optical)
RXBER
Receive Bit Error Rate Threshold Exceeded
RDI
Remote Defect Indication
Optical A LOS
Optical A Port LOS
Optical B LOS
Optical B Port LOS
T1/E1 Triggers
