Routine Exercise Test - Nortel DMS-100 Series Maintenance Manual

3-32 ESA maintenance overview
Note 2: If the OPAC is out of service during the daily update, the system
updates the data as part of the normal RTS sequence.

Routine exercise test

Routine exercise (REx) tests are a series of tests performed on ESA
hardware. This hardware is not used while the ESA processor provides
normal service.
The system performs these tests as a routine. To perform the REx test, the
user can enter the test (TST) command with the REx option. These tests
require that both LCM units of the OPAC, RMM, and ESA processor are
InSv.
The REx test indicates the ability of the LCM units to enter and exit ESA
mode. The test also indicates the ability of the LCM units to send messages
to the ESA processor while in ESA mode.
The system only tests one LCM unit at a time. A test of both units at the
same time causes calls connected at the time of the test to lose service.
While the system tests one unit, the other unit continues call processing in
the takeover mode.
The system runs a lockout task on the tested LCM unit to prevent accidental
attempts at maintenance on the unit. The lockout task is the same task an
ESA exit uses. Lockout does not perform maintenance.
Takeover and takeback on an LCM unit affects calls that are connecting, but
not calls already connected. The system returns the LCM unit to service
before the system tests the other unit.
The actions that follow occur during a REx test:
1 The system tests the messaging ability of each of the peripherals (ESA
2 When preliminary tests pass, the system places one LCM unit in ESA
3 The ESA processor tests the ability of the LCM units to message to the
4 The system performs other diagnostics on the ESA module. Other
5 After all tests are complete, the system takes the unit out of the ESA
297-8211-550 Standard 05.01 August 1999
module, LCM units, and RMM). If any of these preliminary tests fail,
the system does not run REx tests.
mode and the other unit in the takeover mode. The unit in the ESA
mode has messaging links switched from the host to the ESA module.
ESA module under ESA conditions.
diagnostics include the tones test, and a comparison of LCC control and
6X75 status bytes.
mode. The system returns the unit to service.