call.transferred

Fires when a transfer is attempted, with whether it worked.

{
  "id": "73af09d6c1e24b8fa5302e9b7c6d1480",
  "type": "call.transferred",
  "created_at": "2026-10-02T09:13:55.771000+00:00",
  "message": {
    "type": "call-transferred",
    "call": { "id": "call_elster_hotel-en" },
    "transfer": {
      "mode": "warm",
      "destination": "+4930222222",
      "status": "success",
      "reason": null
    }
  }
}

Fields


`call.id`	The call being transferred
`transfer.mode`	`cold`, `warm` or `rich`
`transfer.destination`	Where it went
`transfer.status`	Whether it succeeded
`transfer.reason`	Why it failed, when it did — busy, no answer, declined, or voicemail

Using it

Two things worth doing with this. Route the follow-up. A call that ended in a transfer was handled by a person, so it probably shouldn’t go into the same queue as one your assistant resolved. Watch the failures. A rising number of reason values saying nobody answered usually means the destination is understaffed at a particular hour, which is something you can chart and fix.

Using the API

Webhooks

Endpoints

call.transferred

Fields

Using it

​Fields

​Using it

Fields

Using it