Nortel DMS-100 Series Maintenance Manual page 141

• The QUERY parameter returns the status of the REX test. The status is
active or suspended.
• The HELP parameter returns a description of the REX test.
The REX test order for feature AF3771 follows:
• critical nodes, like the communications module (CM) and message switch
(MS)
• the number of days from the last system or manual REX test
• the order of internal PM number
You must enter table REXSCHED to establish the REX test schedule for the
OPM/OPM. This table contains the information the REX test coordinator
requires to schedule the tests. Operating company specifications determine
the requirement for test shedules. The user can enter table REXSCHED to
disable the test. For more information on table REXSCHED, refer to the data
schema section of the Extended Peripheral Module Translations Reference
Manual.
The system generates IOAU112 log report for LCMs when the following
events occur:
• the LCM does not undergo a REX test in the last seven days
• the REX test takes longer than specified
• the system cannot start REX test after a defined number of attempts
ELCM REX test results
Table REXSCHED controls schedules of system REX (SREX) tests. The
LCM_REX_TEST task SREX can run at the same time in multiples of four.
This task can run at the same time as REX tests of XPMs. This ability appears
in figure "SREX scheduling". The LGC, LTC and the RCC XPMs can be hosts
to LCMs. Problems occur when an XPM scheduled for REX tests is the host
of an LCM scheduled for REX tests.
The SREX controller schedules all REX tests of XPMs and LCMs that occur
at the same time to avoid problems. This condition appears in the following
figure "SREX system dependencies". The LCM SREX subsystem registers
the LCM_REX_TEST class and identifies dependencies with other
REX_TEST types during initial program load (IPL). The controller makes
entries with defaults in table REXSCHED as LCM nodes add to the SREX
database.
DMS-100 Family OPM Maintenance Manual ISN07 (TDM)/SN07 (DMS) and up
Functional overview 2-65