Checksums; Lcm Ltc Speech Path Diagnostics Enhancements - Nortel DMS-100 Series Maintenance Manual

Table 10 Full in-service tests
State
Bsy, sane
Bsy, insane

Checksums

The DMS-100 Family of peripheral modules uses a number to calculate the
checksum (CHKSUM) for each software load. After the PM is loaded and
tested, the checksum total is compared with the expected checksum total.
When the totals match, the load is correct. When the totals do not match, the
load must be loaded again with the LOADPM command. Each PM type has a
different checksum value for each load. The QUERYPM command displays a
checksum value for the load of the PM.

LCM LTC speech path diagnostics enhancements

The LTC diagnostic tests consist of the following two parts:
• Speech path diagnostic (SPCHDIAG). SPCHDIAG tests all internal
components of the LTC (or LGC) speech path for data integrity. These
tests include C-side and P-side loop-arounds and speech bus time slots.
• P-side link diagnostic (PLNKDIAG). PLNKDIAG tests links between the
LTC and any auxiliary peripherals, like the OPM. The system performs the
tests on all links or selected links.
Speech path diagnostic for the LTC
The speech path diagnostic consists of four separate tests:
• hardware presence test
• P-side interface presence test
• P-side loop test
• internal loop test
Each test runs when all the previous tests pass. The following paragraphs
describe the four tests.
Hardware presence test
formatter (6X41), message (6X69) and time switch (6X44) cards. This
hardware is necessary for the remainder of the tests. When any one of these
cards is not present, the diagnostic returns a No Resources error message.
The diagnostic produces a PM181 log report.
DMS-100 Family OPM Maintenance Manual ISN07 (TDM)/SN07 (DMS) and up
In-service tests
In-service tests
Stand-alone in-service
tests
This test makes sure the LTC contains the
Functional overview 2-33
Busy
Full (all) tests
Stand-alone
out-of-service tests