Subscriber Lines Automatic Maintenance; Lcm Rextest - Nortel DMS-100 Series Maintenance Manual

Restrictions and limitations
The following restrictions apply to this feature:
• The system test manually busies the logical drawer before running the
RELAY test. If there are lines in a call processing busy state, the drawer is
skipped for this test cycle.
• Before running a manual BRT on a single drawer, the drawer should be
ManB.
• If at least one NT6X17 line card is not datafilled within each logical
drawer, the drawer is not tested.
• If the line card selected for testing is removed during the test, the drawer
fails.
• If a drawer does not RTS when the system BRT completes, the drawer is
set SysB so the system audit tries an RTS.
• This test is not run on an LCM at the same time as an LCM audit and a
REX test.
• The BRTST_START_TIME and BRTST_STOP_TIME fields of the
BICRELAY_XLCM_TEST_SCHEDULE office parameter cannot have
the same value. There must be at least a 10-minute time difference
between the parameters.

Subscriber lines automatic maintenance

The system performs automatic subscriber line tests on line circuits and loops,
usually on a planned basis, without switch operator involvement except for
initial planning. In a DMS-100 switch office, these tests are performed under
the lines maintenance subsystem (LNS).

LCM REXTEST

The LCM REXTEST includes running out-of-service diagnostic programs for
each LCM or Star Hub unit, and in-service diagnostics for each unit in both
normal and takeover modes. Office parameter NODEREXCONTROL and
LCDREX_CONTROL in table OFCVAR controls the LCM REXTEST.
REX is performed during the defined interval for one LCM or Star Hub at a
time. The REX test occurs in the order the LCMs were entered in the inventory
table. It may not be possible to test every LCM or Star Hub in the office during
the REX interval. In this event, when the next interval starts, REX starts where
it left off during the previous interval. A REX test on an LCM or Star Hub
takes up to 15 min.
Star Remote System automatic maintenance 4-25
DMS-100 Family NA100 Star Remote System XPM15 and up