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7. Monitoring and Troubleshooting
7-18
March 2001 3160-A2-GB24-10
Yellow at
Network
message appears
1. Network cable problem.
2. Far-end device has lost
framing sync on the line.
3. Facility problem.
1. Check that your network cable
is securely attached at both
ends.
2. Check the status of the
far-end device.
3. Contact your facility provider.
Yellow at DTE
message appears
DTE has detected an LOS or
LOF condition.
1. Check the status of the DTE.
2. Check that the DTE
Drop/Insert (DSX-1) cable is
securely attached at both
ends.
Table 7-7. Troubleshooting (3 of 3)
Symptom Possible Cause Solutions