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DS1C-BD
Issue 1 June 2005 1093
Downgrading from Critical to High Reliability
The strategy this downgrade follows is to change from critical to high reliability. High reliability is
actually duplication of the media server, control network, and IPSIs without duplicate paths from
IPSIs to CSS.
8. change system-parameters
duplication
Enable PNC duplication by changing the
Enable Operation of PNC
Duplication field to y.
9. Physically remove the a-pnc and
b-pnc fiber endpoint circuit packs
Physically remove EI, SNI, and DS1C circuit
packs associated with the b-pnc.
10. change circuit-pack Un-administer the PNC circuit packs.
11. clear firmware Clear any alarms or errors against those
circuit packs.
12. status pnc Use status pnc to ensure that the PNC is
in good health.
Table 371: Removing Fiber Connectivity from a PN (continued)
Step Command/Step Description
2 of 2
Table 372: Downgrading from Critical to High Reliability
Step # Command/Step Description
1.
status pnc Check to see if A-side is active. If not:
1. Resolve any alarms against a-pnc.
2. reset pnc-interchange to activate
a-pnc.
3. busyout pnc-standby Busyout the standby PNC.
4. change system-parameters
duplication
Disable PNC duplication by setting the
Enable Operation of PNC
Duplication field to n.
5. list fiber-link Lists administered fiber connections by
number.
1 of 2