Instruction manual

Maintenance
Demand Tests
Demand tests are diagnostic tests that check the functioning of hardware and
software.
Before running a demand test, the user must take the 800 CO-BRI module out of
service. This can be done by choosing “Busy-Out” or “Reset” from the slot
maintenance screens. Choosing Busy-Out is preferred because Busy-Out does
not disrupt calls in progress. Busy-Out and Reset work the same for the
800 CO-
BRI module as they do for any module (see the Maintenance and
Troubleshooting manual, #555-620-143).
Three demand tests can be run on the 800 CO-BRI module: the Board Controller
Test, the Internal (DSE) Loopback Test (DSE is the abbreviation for ‘digital
switching element”), and the B-Channel Loopback Test. The first two tests are
run from the Demand Test menu. The B-Channel Loopback Test is selected from
the Slot menu.
These three tests should be run in the following order:
1. Internal Loopback Test
2. Board Controller Test
3. B-Channel Loopback Test
6-4 Demand Tests