Interactive Diagnostics; The Enhanced Maintenance Feature - Nortel Meridian 1 General Maintenance Information

Interactive diagnostics

The Enhanced Maintenance feature

You can load overlay programs, including programs called maintenance
routines, into memory through the system terminal or maintenance telephone.
This function is performed by the Overload Loader program.
Note: The programs used in Midnight and Background Routines are
also used manually as interactive diagnostic programs (see Table 6).
Maintenance routines are used interactively with a command/response
format. In this format, you enter a command that tells the system to perform
a specific task. The system performs the task and sends system messages
indicating the status or errors back to you.
With interactive diagnostics you can do the following:
• disable, test, and enable specific equipment
• verify that a reported fault still needs to be cleared
• verify that a repair procedure has cleared a fault
All maintenance programs and commands are described in detail in X11
Administration (553-3001-311). For help with interpreting system messages,
refer to X11 System Messages (553-3001-411).
System software sometimes requires modifications, called patches, provided
by Nortel Networks Technical Assistance Centers. The command ISS in Print
Routine 3 (LD 22) prints the software generic and issue. A plus sign (+) by
the issue number means a patch is in service.
The Enhanced Maintenance feature does the following:
• allows patches to automatically survive a sysload
• permits patches on non-resident programs
• records all patches in the system
• allows data disks to be shipped with pre-loaded patches
If there is a problem with a patch, the CPU sends system messages with the
mnemonic EHM to the system terminal or the History File.
Software maintenance tools
Meridian 1 General Maintenance Information
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