Incident triggered a notification to first level. Event was acknowledged via phone within the 15 min period. Logs show the acknowledgement. Event was still escalated to the final level.
Log entry
Alert acknowledged via voice
We have a 4 level escalation:
1. If event is not acknowledged 0 min after notification alert on-call
2. If event is not acknowledged 15 min after notification alert on-call again
3. If event is not acknowledged 30 min after notification alert on-call again
4. If event is not acknowledged 45 min after notification alert entire team