ACS-assigned call identifier.
The interaction the failed call belonged to — primary correlation key for triage.
Epoch-ms timestamp when the failure event fired.
Which layer terminated:
callFailed — SIP signaling / dialog failed.mediaFailed — RTP audio path terminally lost.
A single voice call failure record captured in the diagnostic bundle's bounded ring buffer. Only terminal failures are recorded — successful calls and transient media disconnects do not produce records.
Primary triage use cases:
interactionIdto see one interaction's full retry history (e.g. 6 failures with the sameinteractionIdin 30 s = one network incident, not six independent problems).failedAttimestamps across bundles from multiple agents to identify whether failures cluster in a common time window (regional network incident vs per-agent issue).callIdinto the log ring buffer for full per-call detail when the log has not rolled over.