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System controlled maintenance
Built-in diagnostic functions constantly monitor and analyze the system and
individual card, performing the following operations:
•
•
During system initialization, the system examines the MSDL base code. If
the base code needs to be downloaded, the CPU resets the MSDL card and
starts downloading immediately following initialization. At the same time, all
other MSDL peripheral software programs are checked and, if they do not
correspond to the system disk versions, the correct ones are downloaded
to the card.
If manual intervention is required during initialization or operation,
information and error messages appear on the console or the system
TTY to suggest the appropriate action. For a complete discussion of the
information and error messages, refer to Software Input/Output Reference
— Administration (NN43001-611). Detailed information of system disabled
substates and the action required for each substate is found at the end
of this document.
Manually controlled maintenance
Use manual maintenance commands found in the following programs to
enable, disable, reset, get the status of, and perform self-tests on the MSDL
card:
•
•
•
•
For a complete discussion of these programs, refer to Software Input/Output
Reference — Administration (NN43001-611).
Copyright © 2003-2008, Nortel Networks
.
using autorecovery to automatically correct a temporarily faulty condition
and maintain the system and its components
printing information and error messages to indicate abnormal conditions
that caused a temporary or an unrecoverable error
Input/Output Diagnostic Program LD 37
Program LD 42
Link Diagnostic Program LD 48
PRI D-channel Diagnostic Program LD 96
Note 1: Enter commands after the dot (.) prompt.
Note 2: The "x" in the commands below represents the DNUM value
of the card number.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Maintenance 411
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