CHAPTER 5 ND-45383 (E)
Page 116
Revision CD 1.0
2.1 Technical Terms for Explaining Message Detail Data
Paragraph 2.3: “System Message” of this chapter, explains how to interpret message detail data in each
system message. In the explanations, the following technical terms are used:
• Circuit Card Location Information
The paragraphs and figures which follow explain the meaning of each technical term.
Table 5-1 System Messages for the DRU
SYSTEM
MESSAGE
FAULT NAME CONTENTS OF FAULT
13-N Digital Line Warning During data transfer from the NEAX2400 IMS to the DRU, such a fault as
frame loss, multi-frame loss, signal link down detect, etc. has occurred.
13-O Digital Line Failure A fault represented by the system message “13-N” has occurred more than
16 times consecutively within a 1-hour period.
13-P Digital Line Restore The fault indicated by the system message “13-N” or “13-O” has been re-
stored to normal.
13Q DRU Battery Opera-
tion
The DRU is operating on the backup battery because the AC source power
supply has failed.
13-R AC Line Operation The AC source power supply has been restored to normal.
MG
UG
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