Nortel DMS-100 Series Maintenance Manual page 122

4-22 Star Remote System automatic maintenance
LCM-level test The office-level (automated) test is run when the schedule is
entered in the office parameter. Once an LCM is tested, the LCM is not tested
again until each LCM in the office is correctly tested. When all LCMs
included in the schedule are tested within the window, the BRT stops. Testing
continues when the next window arrives. If an LCM is not tested, it is skipped
in the current window and a PM181 information log is output that gives the
reason the test was not performed. If an LCM test continues to run when the
stop time arrives, the current LCM-level test is allowed to complete.
The BRT remembers which LCM was the first to be tested within the given
window. The next LCM to be tested is compared to the first LCM. If the
LCMs are the same and the current date and time are within the window, the
BRT stops. If all LCMs are not tested within the window, the BRT begins
where it left off during the last planned window.
Operating company personnel can plan for the BRT to run with the automatic
line test (ALT) or the LCM REX test. However, running the BRT and the ALT
at the same time is not recommended for the following reasons.
•
•
None of these tests run at the same time on the same LCM. The user must
define a window that does not conflict with the planned ALT or REX test.
The LCM audit, the manual REX, and the system REX cannot be run on the
same LCM that is running the system BRT. Also, the STAR PM/UNIT cannot
be made ManB during the system BRT.
Simultaneous tests for each LCM Simultaneous LCM tests run if test
equipment is available up to the number indicated in the
BICRELAY_NUM_SIMUL_TESTS parameter described earlier. There must
be LTUs or MTUs provisioned to allow the number of simultaneous tests
(LCM-level) to run. Because of real-time considerations, the
BICRELAY_NUM_SIMUL_TEST parameter has a range of one through
three. A higher number in this field allows more LCMs to be tested within a
given window.
Drawer-level test The BRT drawer-level test requires the metallic test
equipment and a single NT6X17 line card to be located in each drawer to be
tested. The line card tests the BIC relay and must be in a working state. The
card must not indicate a diagnostics failure at the MAP terminal. The line card
cannot be indicated as missing (M).
Each drawer is placed in a ManB state before the drawer-level test. Each
drawer is out of service for approximately 10 s. This interrupts call processing.
297-8353-550 Standard 05.01 March 2001
The use of necessary test equipment by both or all of these tests reduces
the number of LCMs that can be tested within the window.
The completion of the ALT is slowed.