Bic Relay Test (Brt) - Nortel DMS-100 Series Maintenance Manual

2-54 Functional overview

BIC relay test (BRT)

The BRT tests the tip and ring reversal relay on each BIC of a given LCM. The
BRT allows for the manual testing of a single drawer of a specified LCM and
the scheduled tests of all LCMs in an office. The QUERYPM FLT command
is enhanced to indicate the drawers that fail the manual or system BIC relay
test. This test generates a PM181 log and a new log, PM132, to indicate test
results. Refer to the chapter OPM related logs for information on BRT-related
logs.
The following paragraphs describe the levels of BRT tests.
Office level
The schedule includes loops over each LCM. A single BRT runs on each
drawer of the given LCM. The results of the tests appear in a logutil report.
The logutil report combines the results of each drawer test.
LCM level
This test runs from the scheduled BRT. The scheduled test selects an LCM that
did not have drawers tested during the BRT window. The office parameters
define this BRT window. The system runs a BRT on each drawer of this LCM.
Drawer level
This test runs from the LCM-level scheduled test or manually from the LCM
MAP display level. This test is a single LCM drawer test.
The office-level test loops over the LCMs in an office and performs the
LCM-level test. The LCM-level test loops over each drawer of a set LCM and
performs the drawer-level test. The drawer-level test is a BRT.
Office parameters for user scheduled tests
Scheduling for the BRT uses the information from the new office parameters
in table OFCVAR. The new parameters are
BICRELAY_XLCM_TEST_SCHEDULE and
BICRELAY_NUM_SIMUL_TESTS. These parameters provide user
flexibility to schedule the BRT from one to seven days a week. You can define
the window size, and define how many tests (LCM-level) run at the same time.
These parameters follow:
•
297-8361-550 Standard 04.02 December 2004
BICRELAY_XLCM_TEST_SCHEDULE
— This parameter defines the start time (BRTST_START_TIME) and
stop time (BRTST_STOP_TIME) for the office-level test. These times
cannot be the same. The test window must be a minimum of 10 min in
length. The last field of this parameter, BRTST_DAYS_OF_TST,
specifies the day or days of the week that the office-level test runs. This
field can have values MON, TUE, WED, THU, FRI, SAT and SUN.