In NG-SDH equipment, which of the following conditions will not cause TPS switching to occur?

In NG-SDH equipment, which of the following conditions will not cause TPS switching to occur?
A . 3.3V power supply undervoltage
B. Abnormal 58M crystal oscillator
C. Abnormal chip (SD538, SA527, CPLD)
D. Report T_LOSEX on the working branch board

Answer: D

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