Demand test descriptions and error codes - Avaya Support

S8700-series Fiber-PNC
In IPSI connected port networks, the Tone Clock circuit is found on the IPSI circuit pack. In non
IPSI connected port networks, there is a Tone Clock circuit pack. The following sections
describe the relationship between the various reliability options and the IPSIs or Tone Clock
circuits.
Three items can be duplicated: server, IPSI, and PNC. Note that duplicated control networks
and duplicated IPSIs go together; when the IPSIs are duplicated, the control networks must be
duplicated. While all items can be independently duplicated, the combination of duplicated
bearer networks (PNCs) and unduplicated control networks is not allowed. See
Table 266: S8700 Fiber-PNC Reliability Configurations.
Table 266: S8700 Fiber-PNC Reliability Configurations
Configuration Server Control Network and IPSI Bearer Network
Duplex Reliability Duplicated Unduplicated Unduplicated
High Reliability Duplicated Duplicated Unduplicated
Critical Reliability Duplicated Duplicated Duplicated
Duplex-Reliability Configuration
The duplex-reliability configuration shown in Figure 89: Duplex-Reliability Configuration has a
duplicated server, an unduplicated control network, unduplicated IPSIs in the IPSI connected
port networks, and an unduplicated bearer network. Therefore the Tone Clock is not duplicated
in the IPSI connected port network. In the non IPSI connected port network, the Tone Clock
boards are also not duplicated.
990 Maintenance Alarms for Communication Manager, Media Gateways and Servers