Diameter Signaling Router Alarms and KPIs Alarms and Events vSTP Alarms and Events (70000-70060, 70100-70999) 70251 - Subsystem Congested 70251 - Subsystem Congested Alarm Group: vSTP Description: Subsystem congested. Instance: DPC = SSN Severity: Major HA Score: Normal Auto Clear Seconds: 0 (zero) Throttle (Seconds) 86400 OID: vSTPSubSystemCongestedNotify Recovery: It is recommended to contact My Oracle Support for assistance if needed.