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CHAPTER 3 System Messages
33-E: SDT Interface Change Notify
This message displays when the ACT/STBY of the SDT (PA-SDTA) card is changed over as a result of fault
detection in the optical fiber line. When the ACT/STBY change cannot be performed, this message also
indicates the cause for the changeover execution failure.
Module Group (MG)
Detailed information
Cause for changeover execution failure
Repair Procedure
Once this message displays, be sure to check other messages, such as [33-C] SDT Alarm Trouble, and review
the cause for the changeover. If any fault is implicated, repair the whole fault(s) according to the situation.
Default Alarm Default Grade Grade Modified Lamp Modified
NON 2
1: X0XX XX00 0000 0000 2: 0000 0000 0000 0000 3: 0000 0000 0000 0000
4: 0000 0000 0000 0000 5: 0000 0000 0000 0000 6: 0000 0000 0000 0000
7: 0000 0000 0000 0000 8: 0000 0000 0000 0000 9: 0000 0000 0000 0000
b7 b0
b7 b6 b5 b4 b3 b2 b1 b0
b7 b6 b5 b4 b3 b2 b1 b0
3
1 2
b7: 0/1 = Even-number MG/Odd-number MG
1
b0: Active SDT after Changeover
0/1=System 0/System 1
b1: Operating Status of SDT
0/1=In service/Out of service
b2, b3: Result of Changeover
0/1=Success/Failure
b7-b4
Cause for Changeover
0001 SDT had a serious failure
0010 MB key on SDT card was turned ON
2
3
0H: (Changeover Success)
1H: Optical interface is not dual
2H: Optical interface has a serious failure in each System 0/1
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