Esa Capability; Rmm Maintenance; Drawer Testing - Nortel DMS-100 Series Maintenance Manual

WLC to detect talk battery failures. There are three methods to avoid this
condition:
— BSY/RTS the LCM. This action is not recommended because of the
service outage. The WLC is in the proper HASU maintenance state
and the LCM can use the WLC to perform talk battery tests.
— Assign a DN to the WLC that can now use the WLC to perform talk
battery tests.
— Assign a second WLC on the same LCM shelf. This WLC can remain
as HASU without a DN assigned.
The second option provides the simplest procedure. The third option requires
an additional WLC for extra hardware, and provides redundancy for the Talk
Battery Alarm feature.

ESA capability

Loss of communication with the host can occur because of a link or DS-1 card
failure. When this event occurs, an OPM with feature package NTX154AA
operates independently. The OPM automatically enters the ESA mode. The
ESA operation continues until restoration of communications occurs over a
minimum of one of the DS-1 links. During entry and exit from ESA, the
system drops all calls.
Refer to the chapter "ESA maintenance overview" for a description of ESA
operation for the OPM.

RMM maintenance

The RMM performs the following maintenance functions:
• bootstrap-level (direct monitor) functions
• RMM table control and MAP workstation maintenance
• scan monitoring processes
• interface with line test equipment
• RMM testing

Drawer testing

The OPM conducts a BIC looparound test to detect line drawer faults. This
action makes sure message and speech data can be sent to and from the BIC.
When the BIC test fails, the CC implements a full in-service test on the two
BICs. This action makes sure the fault is not transient or from the DCC or
processor card.
When any of the BIC or DCC tests fail, the LCM is not forced to takeover
mode.
DMS-100 Family OPM Maintenance Manual ISN07 (TDM)/SN07 (DMS) and up
Functional overview 2-51