---
title: "Start User Call"
method: POST
path: "/api/voice/user-call"
tags: ["voice", "voice"]
---

# Start User Call

`POST /api/voice/user-call`

## Request

- Base URL: `https://api.dialogbrain.com` (the document declares no server; this is the origin it was published from)
- URL: `https://api.dialogbrain.com/api/voice/user-call`
- Auth: none declared

Mint a LiveKit room and dispatch the channel leg for a user-initiated
1:1 call. Browser publishes mic into the room; the channel bridge
(pytgcalls for Telegram, SIP participant for Twilio) joins as the other
publisher. Worker runs STT-only and persists transcript turns to the
per-call thread.

## Request body

- StartUserCallRequest
  - `channel` 'telegram' | 'twilio' | 'whatsapp' | 'telnyx' | 'viber' | 'whatsapp_business', required
  - `channel_account_id` integer, required
  - `target` string, required
  - `contact_id` integer, nullable
  - `tab_id` string, nullable
  - `permission_request_text` string, nullable

## Response `200`

Successful Response

- StartUserCallResponse
  - `url` string, required
  - `token` string, required
  - `room` string, required
  - `call_id` string, required

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/dialogbrain/apis/dialogbrain-v2-api-gateway.md) · [All operations](https://skmtc.dev/dialogbrain/apis/dialogbrain-v2-api-gateway/llms.txt) · [OpenAPI document](https://skmtc.dev/dialogbrain/apis/dialogbrain-v2-api-gateway/revisions/77bef09a9209?raw)