System Rex Controller: Xpm Maintenance - Nortel DMS-100 Series Maintenance Manual

1-64 Maintenance overview

System REX controller: XPM maintenance

Feature AF3771, System REX Controller: XPM Maintenance, provides the
SuperNode switch with an S/DMS system REX test (SREX) controller
which coordinates all system REX tests under a common REX test
scheduler. This feature allows LCM REX tests to be scheduled while other
REX tests are in progress. The SREX test controller makes it easier to
perform a REX test on the whole switch including all peripherals such as the
RLCM-EDC in less time. REX tests are performed to provide early
indication of faults that can impact service and allow operating company
personnel to take corrective measures.
Feature AF3771 allows REX test failures to be found and resolved sooner,
thereby reducing outages in the field. The SREX test controller also allows
operating company personnel to
The SREX test scheduler allows the user to enter the CI level REXTEST
command and the following parameters:
The order for the REX test for feature AF3771 is as follows:
1 critical nodes, such as the communications module (CM) and message
2 number of days since the last system or manual REX test
3 order of internal PM number
Table REXSCHED must be datafilled to establish the REX test schedule for
the RLCM-EDC. This table contains the information required by the REX
test coordinator to schedule the tests according to operating company
specifications. In addition, the test can be disabled by datafilling table
REXSCHED. For more information about table REXSCHED, refer to the
data schema section of the Translations Guide.
297-8381-550 Standard 02.02 April 1999
change the order in which peripherals are tested
coordinate between manual- and system-initiated REX tests
receive alarms for the RLCM-EDC not being REX tested in a time limit
set using table REXSCHED
SUSPEND suspends REX testing for one maintenance window. A
maintenance window is the time period between the REXSTART and
REXSTOP time datafilled in table OFCVAR under the
NODEREXCONTROL parameter.
RESUME resumes REX testing after suspending REX testing.
QUERY returns the status of the REX test (active or suspended).
HELP returns a brief description of the REX test.
switch (MS)