Issue
PRI lines (set for N12 protocol) experience out of service and callers are unable to dial out or place a call into the system.
Action
Unplugging and plugging the PRI cord from the PRI slot will bring the line back in to service and allow calls to go out.
Procedure
- Click Alarms and then Trunks .
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Click the line number of the PRI.
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Select the 24-Hour Performance History tab.
The example above shows that the PRI line experienced clock slips and missed frames. This issue may be resolved by replacing the wiring from the PRIs smart jack and the system.