Lucent Technologies Release 7 Replacing an SNI Circuit Pack Duplicated PNC, Switch Node Interface Manual Loop Back Procedure

DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126 Issue 4 June 1999
Maintenance Object Repair Procedures
9-1433SNI-BD (SNI Circuit Pack)
9
Replacing an SNI 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.
Switch Node Interface Manual Loop Back
Procedure
This procedure is destructive.
This procedure is to be used when an SNI circuit pack c annot be tested b y
software. This can occur when c ommunication between the switc h node carrier
and t he SPE is d own . Befo re usi ng th is p roce dure , the c onfi gur ation audi t tes t
(#759) should be run on SNI circui t packs where possib le via test board UUCSS
s. Also, the processor route audit test (#7 60) should be run via the test board
UUCSS long command for the active SNC in the switc h node carrier. If the activ e
SNC is not inserted, test 760 can be run via test hardware -group pnc P, where
P is a-pnc or b-pnc.
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-c arrier-slot addr ess
of the circuit pack to be replac ed.
4. Replace the circuit pack
5. Enter release board UUCSS !CAUTION:
Do not busyout any Expansion Interfac e
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 DS1C alarms to clear,
or enter clear firmware counterssp 0
<a-pnc or b-pnc>.
Use the letter designation of the pnc which 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.