Rcc2 P-Side Link Diagnostic Program; Overload Resources - Nortel DMS-100 Series Maintenance Manual

4-6 Star Remote System automatic maintenance
The P-side interface test terminates when a failed NTMX81 card is detected or
the NTMX81 is removed. The diagnostic program returns a No Resources
error and produces a PM181 log report.
P-side loop test
After the P-side interface test checks for the presence of all MX81 cards, the
P-side loop test checks the correct operation of these and other dedicated
P-side loop-around circuits for the RCC2.
Internal loop test
This test checks the data integrity of RCC2 speech channels. If the RCC2 is
OOS, a full test on every channel is run. If the RCC2 is InSv, the test checks
two speech channels selected at random. The internal loop test also checks the
operation of RCC2 pulse-code modulation (PCM) enable/disable gates.

RCC2 P-side link diagnostic program

The P-side link diagnostic program includes three separate tests:
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Hardware presence test
This test checks for the message (NTMX76AB) and timeswitch (NTMX75)
cards in the RCC2. These cards are necessary for the other P-side link
diagnostic tests to run. If any of these cards are not present, the diagnostic
program returns a No Resources error message and produces a PM181 log
report.
P-side interface presence test
This test is identical to the speech path diagnostic program. This test checks
that all RCC2 P-side links to be tested continue to be present. This test flags
missing or failed MX81AA cards in the RCC2.
Full peripheral test
After the first two tests in the P-side link diagnostic program, this test makes
sure that necessary hardware is present. The full peripheral test checks one
speech channel on each defined RCC2 P-side link to the Hub. This test is run
when the RCC2 is in active mode.

Overload resources

When the traffic load on the Star Hub increases so the amount of call
processing is greater than RCP cards can handle, the Star Hub accepts calls at
a slower rate until the overload clears. Normally, when processing calls, the
Star Hub queues the call requests and assigns them priorities in its data store.
297-8353-550 Standard 05.01 March 2001
Hardware presence test
P-side interface presence (DS-1 link interfaces)
Full peripheral test