Nortel DMS 100 Series Maintenance Manual page 80

2-64 Maintenance overview
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System REX Controller for XPM Maintenance
The System REX Controller for XPM Maintenance feature provides the
SuperNode switch with an S/DMS System REX test (SREX) controller. The
SREX coordinates all the system REX tests under a common REX scheduler.
This feature permits RSC-M REX tests to be scheduled while other REX tests
are in progress. The SREX controller allows a REX to occur for the whole
switch in less time. All peripherals, like the RSC-M, are also included. This
condition permits REX test failures to be found and resolved quickly. This
condition reduces outages in the field.
The SREX controller allows operating company personnel to perform the
following actions:
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The SREX scheduler permits the user to enter the CI-level command
REXTEST and the following parameters:
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297-8223-550 Standard 04.02 November 2000
performs recovery and consists of a busy (BSY) and an RTS of the inactive
unit.
displays the failure reason for a SWACT denial or failure. The denial or
failure occurs during a manual REX test at the MAP terminal as REX
failed. Use the TST REX QUERY or TST REXCOV QUERY command
for the posted XPM, to obtain s detailed reason for the failure. In addition,
the system generates a PM600 log report that details the REX test failure
reason.
change the order that the system tests peripherals
coordinate manually-initiated and system-initiated REX tests
receive alarms for the RSC-M not being REXed in a time limit, using table
REXSCHED
SUSPEND, which suspends REX tests for one maintenance window. A
maintenance window is the period between the REX START and STOP
times. This period is entered in table office variable (OFCVAR) under the
NODEREXCONTROL parameter.
RESUME, which resumes REX tests after this command suspends REX
tests
QUERY, which returns the state of the REX test (active or suspended)
HELP, which returns a short description of the REX test
Note: The maximum number of concurrent XPM REX tests of each
type that can run at the same time is ten.