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NDA-24300 CHAPTER 3
Page 237
Issue 1
SYSTEM MESSAGES
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 indi-
cates the cause for the changeover execution failure.
➀
MG (Module Group)
➁
Detailed information
➂
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.
1: X0XX XX00 0000 0000 2: 0000 0000 0000 0000 3: 0000 0000 0000 0000
➀ ➁
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
Default Alarm:
NON
33-E
SDT Interface Change Notify
Default Grade:
2
Grade Modified: Lamp Modified:
b7: 0/1 = Even-number MG/Odd-number MG
b0: Active SDT after Changeover
0/1=No.0 System/No.1 System
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
0H: (Changeover Success)
1H: Optical interface isn’t dual
2H: Optical interface has a serious failure in each No.0/No.1 system