Release notes

Release notes for Teler across the API, SDKs, webhooks, and platform, newest first. Each entry is grouped by month and tagged by change type.

July 2026

July 3, 2026Webhook version 2026-06-01

A new dated webhook version, 2026-06-01, opt-in per Voice App or SIP Trunk. The previous 2025-08-01 version is unchanged and continues to work for existing pins.

Added

• Event envelope. Every webhook body is now wrapped with id, type, api_version, occurred_at, account_id, voice_app_id / sip_trunk_id, call_id, leg_id, and data. See Event envelope.
• New headers: X-Teler-Event-Id, X-Teler-Api-Version, X-Teler-Source.
• Resource-typed IDs: acc_, va_, st_, cs_, cl_, ms_, evt_, rec_, pb_.
• New events: leg.created, leg.answered, leg.completed, stream.initiated, stream.completed, recording.completed, recording.failed.
• Call resources API. GET /api/v1/voice/calls, GET /api/v1/voice/calls/{id}, GET /api/v1/voice/calls/{id}/legs, and the SIP-trunk equivalents under /api/v1/sip/calls. See Call resources.
• Live call control. POST /api/v1/voice/calls/{id}/hangup / mute / dtmf / play, async and idempotent (Idempotency-Key required). See Live call control.
• dial flow verb. Originate an outbound leg and bridge it into the current call, with recording modes, custom SIP headers, and per-outcome fallbacks (on_no_answer, on_busy, on_failure).
• Stable event id across retries, replays, and recovery re-deliveries, for idempotent dedupe. See Retries and idempotency.

Changed

• Field renames inside data: hangup_time to ended_at, hangup_source to ended_by, duration (seconds) to duration_seconds, answer_time to answered_at, and direction values incoming / outgoing to inbound / outbound. New normalized reason field. Full field-level diff and migration steps: API versioning.