Nortel DMS-100 Series Maintenance Manual page 87

Test operation
The system performs a BRT for each LCM. If the test is performed
manually, the system performs a BRT for each drawer. For each LCM, the
system performs a BRT on every drawer of the LCM. You use the TST
DRWR drwr_no RELAY command at the LCM MAP display level to call
up the single drawer test.
Office-level test The system test performs the following steps:
loops over each LCM in the test schedule
loops over each drawer for each LCM
runs one tip and ring reversal relay test for each drawer
generates one logutil report with the results of the 20 drawers
sets the drawer and node ISTb status
LCM-level test The office-level automated test runs when the scheduling
is entered in the office parameter. After an LCM is tested, the LCM is not
tested again until each LCM in the office is tested. When every LCM in the
schedule is tested in the window, the BRT stops. Tests resume when the next
window arrives. If an LCM is not tested, the LCM is skipped in the current
window. The system generates a PM181 information log which indicates
the reason the test does not occur. If an LCM test continues to run when the
stop time arrives, the current LCM-level test can complete.
The BRT knows which LCM was the first to be tested in the given window.
Each following LCM to be tested is compared to the first LCM. If the
LCMs are the same and the current date and time fall in the window, the
BRT stops. If the LCMs are not tested in the window, the BRT begins where
the BRT left off during the last scheduled window.
The BRT can be scheduled to run at the same time as the automatic line test
(ALT) or the LCM REX test. Do not run the BRT and the ALT at the same
time for the following reasons:
The use of necessary test equipment by these tests reduces the number of
LCMs that can be tested in the window.
The completion of the ALT slows.
None of these tests run at the same time on the same LCM. You must define
a window that does not coincide with the scheduled ALT or REX test.
The LCM audit, the manual REX, and the system REX cannot run on the
same LCM that runs the system BRT. Also, the LCM PM/UNIT cannot
occur ManB during the system BRT.
DMS-100 Family RLCM Maintenance Manual XPM12 and up
Maintenance overview 1-71