POST
/realtime/calls/{call_id}/referRefer call
Transfer an active SIP call to a new destination using the SIP REFER verb.
- RetriesRetries up to 2×, 500ms backoff, 30s timeout.
call_idstringrequired
The identifier for the call provided in the
[`realtime.call.incoming`](https://developers.openai.com/api/reference/resources/webhooks#realtime.call.incoming)
webhook.
Destination URI for the REFER request.
target_uristringrequired
URI that should appear in the SIP Refer-To header. Supports values like
`tel:+14155550123` or `sip:agent@example.com`.
200Call referred successfully.