# Wave 2 / Track 10 - Live Voice Reliability and Realtime SLA

Track 10 starts after Track 9 QA acceptance is collected and frozen.

## Status Update (2026-03-05)

- Track 10 is closed using acceptance package:
  - `docs/acceptance/track10/track10-acceptance.md`
- Closure mode: `GO with exception`
  - direct p95 `started->ended` measured `33s` vs target `30s`
  - reliability gates for stuck lifecycle/import are green (`active_no_end=0`, `ended_no_recording_upload=0`)
- Follow-up latency tightening is moved to the next track.

## Goal

Move from "Asterisk integration works" to "voice lifecycle is predictably near-realtime".

Required outcome:
- `call.started` appears in supervisor flow quickly and consistently.
- `call.ended` is not delayed by reconciliation paths.
- recording upload latency is measured and controlled.

## Scope

In scope:
- latency/SLA instrumentation for voice lifecycle (`started -> ended -> recording`),
- stricter reconcile behavior for stale AMI events,
- automated latency report as an acceptance artifact,
- Track 10 acceptance checklist and evidence structure.

Out of scope:
- ARI call control,
- operator softphone controls,
- new business voice features.

## Baseline SLO (Track 10 target)

- p95 `call.started -> call.ended` <= `30s` for lab calls.
- p95 `call.ended -> recording uploaded` <= `45s`.
- unresolved `failed bridge events` = `0` for acceptance window.

## Deliverables

1. Latency report script:
   - `scripts/track10_voice_latency_report.py`
2. Runbook:
   - `docs/runbooks/track10-live-voice-reliability.md`
3. Acceptance evidence folder:
   - `docs/acceptance/track10/<timestamp>/`
4. Final decision doc:
   - `docs/acceptance/track10/track10-acceptance.md`

## Phase 1 (implemented slice)

Completed:
- added Track 10 latency report script with SLO thresholds and JSON artifacts,
- added `direct` vs `reconciled` split in latency metrics,
- updated bridge path so `recording.ready` can close call lifecycle immediately when `call.ended` is missing.

## Acceptance

Track 10 is accepted when:
- latency report is generated from real calls,
- all mandatory checks pass for the acceptance window,
- `GO` is signed in `track10-acceptance.md`.