DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126 Issue 4
June 1999
Maintenance Object Repair Procedures

9-797EXP-INTF (Expansion Interface Circuit Pack)

9
Replacing an EI Circuit Pack— Duplicated PNC
!WARNING:

On a system with duplicate d PNC, synchronization may be provid ed over a

combination of active and standby comp onents. This condition is indic ated

by an OFF-BOARD WARNING alarm against TDM-CLK with error type

2305. Repairs to standby PNC in this state may d isrupt service. Otherwise,

if the active PNC is functional, replacem ent of a standby comp onent will not

disrupt service.

6. Wait 5 minutes for SNI-BD, FIBER-LK
AND DS1 CONV-BD alarms to clear,
or enter clear firmware counters
a-pnc
Step Action Explanation/Caution
1. Enter status pnc Verify that the component to be replaced is on
the standby PNC.
2. Enter busyout pnc
3. Enter busyout board UUCSS UUCSS represents the cabinet-carrier-slot
address of the circuit pack to b e replaced.
4. Replace the circuit pack
5. Enter release board UUCSS CAUTION:

Do not busyout any Expansion

Interface circuit pack after this point.

6. Enter test alarms long clear for
category exp-intf
7. Wait 5 minutes for SNI-BD, SNI-PEER,
FIBER-LK, and DS1 CONV alarms to
clear, or enter clear firmware
counters <a-pnc or b-pnc>
Use the letter designation of the pnc that holds
the replaced component (the standby p nc).
8. Enter status pnc If either PNC state-of-health is not “functional,”
consult the ‘‘PNC-DUP (PNC Duplication)’’
section.
9. Enter release pnc
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Step Action Explanation/Caution
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