Nortel DMS-100 Series Maintenance Manual page 79

Maintenance overview 1-63
If an LCM test runs when the stop time arrives, the system completes the
current LCM level test.
The BRT records which LCM the system tests first in the given window.
The system compares each subsequent LCM 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 system does not test all LCMs in the window, the BRT begins where
the BRT left off during the last scheduled window.
You can schedule the BRT to run at the same time as the automatic line test
(ALT) or the LCM REX test.
You must not run the BRT and the ALT at the same time. Both or all tests
use test equipment. Use of test equipment reduces the number of LCMs that
the system can test in the window. As a result, the completion of the ALT
slows.
These tests do not run at the same time on the same LCM. Define a window
that does not coincide with the scheduled ALT or REX test.
Note: The LCM audit, the manual REX, and the system REX cannot run on
the same LCM that runs the system BRT. You cannot ManB the LCM
PM/UNIT during the system BRT.
The system runs simultaneous LCM tests if test equipment is available at the
maximum number in the BICRELAY_NUM_SIMUL_TESTS parameter.
The MTUs must be provisioned to allow the number of LCM-level
simultaneous tests 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 the system to test additional LCMs in a given window.
Drawer-level test The BRT drawer-level test requires metallic test
equipment and a single NT6X17 line card in each drawer tested. The world
line card tests the BIC relay and must be in progress. The card must not
indicate a diagnostics failure at the MAP terminal. The system must not
indicate the card as missing (M).
The system places each drawer in a ManB state before the drawer-level test.
Each drawer is OOS for approximately 10 s. During this time, the system
suspends call processing.
When the tip and ring reversal relay test on all drawers is complete, the
system displays results. The system displays results in a PM132 log report
that includes results of each individual drawer test of a given LCM.
DMS-100 Family OPAC Maintenance Manual XPM12 and up