Checksums; Star Hub To Host Pm Speech Path Diagnostics - Nortel DMS-100 Series Maintenance Manual

Line drawer maintenance
A system audit runs every 10 min for each Star Hub and tries to return to
service any drawers in the system busy (SysB) state. If the Star Hub detects
any faults, the system tests and handles drawers in the ISTb state.
The following table lists states for the Star Hub unit and the related tests.
Table 4-1 Full in-service tests
State
InSv
Bsy, sane
Bsy, insane

Checksums

For the DMS-100 Family PMs, the system uses a number to calculate the
checksum (CHKSUM) for each software load. After loading and testing the
PM, the system compares the checksum total with the expected checksum
total. If the totals match, the load is correct. If there is a mismatch, use the
LOADPM command to load the PM again. Each PM type has a different
checksum value for each load. The QUERYPM command displays a
checksum value for the load of the PM.

Star Hub to host PM speech path diagnostics

The host PM diagnostic program includes the following two tests:
• Speech path diagnostic (SPCHDIAG) program. Tests all internal
components of the line trunk controller (LTC) speech path for data
integrity, including central side (C-side) and peripheral side (P-side)
loop-arounds, and speech bus time slots.
• P-side link diagnostic (PLNKDIAG) program. Tests links between the
LTC and any secondary peripherals, including the Star Hub. The system
performs these tests on either all links or selected links.
Speech path diagnostic program for the host PM
The speech path diagnostic program includes four separate tests:
• hardware presence test
• P-side interface presence test
• P-side loop test
• internal loop test
Star Remote System automatic maintenance 4-3
In-service tests
In-service tests
In-service tests
Stand-alone in-service tests
DMS-100 Family NA100 Star Remote System XPM15 and up
Busy
Out-of-service tests
Full (all) tests
Stand-alone out-of-service
tests