---
title: "Start a transfer"
method: POST
path: "/transfers"
tags: ["Transfer"]
---

# Start a transfer

`POST /transfers`

Initiates a call transfer and returns the result.

## Request body

- object
  - `transfer_type` 'attended' | 'blind', required
  - `transferer_call_id` string, required — Call ID of the transfer initiator.
  - `transferee_addresses` CommonAddress[], required — Addresses of the transfer recipients.
    - `type` '' | 'agent' | 'conference' | 'email' | 'extension' | 'line' | 'sip' | 'tel' | 'web_session' — Type of address.
    - `target` string — The address endpoint. Format depends on type: phone number for tel (e.g. +14155551234), UUID for agent/conference/extension, email for email, SIP URI for sip.
    - `target_name` string — Address's name.
    - `name` string — Optional label for this address.
    - `detail` string — Additional notes about this address.

## Response `200`

The transfer details.

- TransferManagerTransfer
  - `id` string, uuid — The unique identifier of the transfer. Returned from the `POST /transfers` response.
  - `customer_id` string, uuid — The unique identifier of the customer who owns this transfer. Returned from the `GET /customers` response.
  - `type` 'attended' | 'blind'
  - `transferer_call_id` string, uuid — The unique identifier of the call initiating the transfer. Returned from the `GET /calls` response.
  - `transferee_addresses` CommonAddress[] — List of target addresses for the transfer.
    - `type` '' | 'agent' | 'conference' | 'email' | 'extension' | 'line' | 'sip' | 'tel' | 'web_session' — Type of address.
    - `target` string — The address endpoint. Format depends on type: phone number for tel (e.g. +14155551234), UUID for agent/conference/extension, email for email, SIP URI for sip.
    - `target_name` string — Address's name.
    - `name` string — Optional label for this address.
    - `detail` string — Additional notes about this address.
  - `transferee_call_id` string, uuid — The unique identifier of the call being transferred. Returned from the `GET /calls` response.
  - `groupcall_id` string, uuid — The unique identifier of the groupcall created for the transfer. Returned from the `GET /groupcalls` response.
  - `confbridge_id` string, uuid — The unique identifier of the conference bridge used for attended transfer. Returned from the `GET /conferences` response.
  - `tm_create` string, date-time — Timestamp when created
  - `tm_update` string, date-time — Timestamp when updated
  - `tm_delete` string, date-time — Timestamp when deleted

## Other responses

- `400` — Invalid request (INVALID_ARGUMENT).
- `401` — Authentication required (UNAUTHENTICATED).
- `403` — Insufficient permission (PERMISSION_DENIED).
- `404` — Resource not found (NOT_FOUND).
- `409` — State conflict (ALREADY_EXISTS or FAILED_PRECONDITION).
- `500` — Internal error (INTERNAL).
- `503` — Upstream unavailable (UNAVAILABLE).

---

[API](https://skmtc.net/voipbin/apis/voipbin-api.md) · [All operations](https://skmtc.net/voipbin/apis/voipbin-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/voipbin/voipbin-api/versions/79e779080bcc/schema)