DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126 Issue 4
June 1999
Maintenance Object Repair Procedures
9-226ATM PNC-DUP (ATM PNC Duplication)
9
4. The system must insert all connectivity-related components for both
standby and ac tive PNC, a process that takes up to 5 minutes, d epending
upon circuit pac k insertion. The process is c omplete when the first
terminal login prompt appears.
5. The PNC-DUP initialization anti-thrashing timer must expire (this occu rs 5
minutes after completion of b oard insertion, PNC interchange, or system
reset of level 2 or higher).
To disable PNC duplication perfor m the following sequence of ste ps:
1. Verify that the A-PNC is active. A forced interchange may be required. See
reset pnc in Chapter 8.
2. Busyout the standby PNC (B-PNC).
3. Turn off the system parameter for PNC-DUP through change
system-parameters duplication.
4. Remove the B-PNC connectivity by removing the Bo ard Locations on the
change fiber form for ATM-PNC.
5. Remove the B-PNC circuit packs (ATM-EI boards). Use change circuit
pack UUC.
6. Disable administration of PNC duplication on the change
system-parameters customer-options form by changi ng the PNC
Duplication field to n.
NOTE:
Alterations to PNC that involve only the

addition

of connectivity can b e done
with PNC-DUP operational.
Alterations requiring the

removal

of connectivity must be done with
PNC-DUP removed.
PNC-DUP must be removed and translations should b e saved before
making any hardware chang es.
Steady State LEDs
The LEDs of PNC components in a stable duplic ated system should ap pear as
follows:
■The
active
ATM-EIs in the EPNs are functioning as Archang els. Their
yellow LED flash pattern is 2 seconds on/2 00 ms off.
■The EPN standby EIs yellow LEDs are off.
■The PPN active EI yellow LED is on steady.
■The PPN standby EI yellow LED is off.