User manual

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6vs/si
555-230-127
Issue 1
August 1997
Maintenance Object Repair Procedures
Page 10-1194STRAT-3 (Stratum 3 Clock)]
10
8 FAIL Reference B failed or CI card B failed. This condition usually
indicates a failure of the DS1 reference; however, there may also be
a failure of the CI card to which the reference is connected. System
Technician dispatched to investigate this problem should take a
spare CI card in case the CI card caused the failure.
If you are NOT ON-SITE, use the following procedure:
1. If there are no DS1-BD errors OR after resolving all DS1-BD
errors, issue the test synchronization r 4 command to
determine if the alarm is still present. If all repetitions of the tests
pass, the alarm no longer exists. Otherwise, system technician
should be dispatched with a spare CI card to use the following
instructions on-site.
If you are ON-SITE, use the following procedure:
1. Look for a red LED on a CI card B (the right CI card). If there is
a red LED, replace the CI card, if a spare is available. If no
spare CI is available on-site, proceed to Step 3. If after
replacing the CI card, the red LED on the new CI card lights
also, proceed to Step 3.
2. Otherwise, issue the test synchronization r 4 command to
clear the alarm. If any test repetitions fail, follow the procedure
for those failures.
8
(cont’d.)
FAIL 3. Look for DS1-BD (DS1 Interface Circuit Pack) errors using the
display error command. Refer to the DS1-BD Maintenance
documentation for recommended strategy to resolve any
DS1-BD errors found. If there are no DS1-BD errors, proceed to
Step 5.
4. After all DS1-BD errors have been resolved, determine if the
alarm still exists by issuing the test synchronization r 4
command to clear the alarm. If any test repetitions fail, follow
the procedure for those failures.
5. Check the DS1 reference A connections to the Stratum 3 clock.
6. Determine if the alarm still exists by issuing the test
synchronization r 4 command to clear the alarm. If any test
repetitions fail, follow the procedure for those failures. If the
problem persists after you have performed this procedure three
times, follow normal escalation procedures.
Table 10-412. TEST #649 Stratum 3 Clock Alarm Query — Continued
Error
Code
Test
Result Description/ Recommendation
Continued on next page