Cause
Port has been busied out by command.
Proposed Solution 1
Procedure
Enter release pri-endpoint extension.
Cause
NPE Crosstalk test (#6) failed.
Proposed Solution 2
Procedure
Replace UDS1 circuit pack.
Cause
UDS1 circuit pack lost its signal.
Proposed Solution 3
Procedure
Check if the UDS1 circuit pack is removed. Check if the UDS1 cable disconnected. Check if the far-end terminal is restarting or experiencing problems. Check circuit pack using UDS1-BD procedure.
