> ## Documentation Index
> Fetch the complete documentation index at: https://docs.daily.co/llms.txt
> Use this file to discover all available pages before exploring further.

# Calltransfer Initiated

> The Calltransfer-initiated webhook

Emitted when a SIP request is sent to the `to_endpoint`, the SIP user is removed from the room, and the call is connected to `to_endpoint`.

## Webhook Events

There are five common fields all events share:

## Calltransfer requested without sip-refer

```json theme={null}
{
  "version": "1.0.0",
  "type": "calltransfer.initiated",
  "id": "3602-call-transfer-init-07efe77a-74e8-4e69-81b0-41ca454c06e01770005095",
  "payload": {
    "domain_id": "04b89420-cf8b-4ea5-a428-02c40b0e2a59",
    "room": "sip-test",
    "timestamp": "1770005095",
    "session_id": "07efe77a-74e8-4e69-81b0-41ca454c06e0",
    "mtg_session_id": "34888835-dadc-4874-a2a8-be38da1f8296",
    "to_endpoint": "sip:user-b@user-a.my-domain.com",
    "from_endpoint": "sip:user-a@user-a.my-domain.com",
    "is_sip_refer": false
  },
  "event_ts": 1770005095.25
}
```

## Calltransfer requested with sip-refer

```json theme={null}
{
  "version": "1.0.0",
  "type": "calltransfer.initiated",
  "id": "3602-call-transfer-init-07efe77a-74e8-4e69-81b0-41ca454c06e01770005095",
  "payload": {
    "domain_id": "04b89420-cf8b-4ea5-a428-02c40b0e2a59",
    "room": "sip-test",
    "timestamp": "1770005095",
    "session_id": "07efe77a-74e8-4e69-81b0-41ca454c06e0",
    "mtg_session_id": "34888835-dadc-4874-a2a8-be38da1f8296",
    "to_endpoint": "sip:user-b@user-a.my-domain.com",
    "from_endpoint": "sip:user-a@user-a.my-domain.com",
    "is_sip_refer": true
  },
  "event_ts": 1770005095.25
}
```