API Reference

Realtime

Calls

Copy Markdown

Open in Claude

Open in ChatGPT

Open in Cursor

---

Copy Markdown

View as Markdown

Refer call

POST/realtime/calls/{call_id}/refer

Transfer an active SIP call to a new destination using the SIP REFER verb.

Path ParametersExpand Collapse

call_id: string

Body ParametersJSONExpand Collapse

target_uri: string

URI that should appear in the SIP Refer-To header. Supports values like tel:+14155550123 or sip:agent@example.com.

Refer call

HTTP

HTTP

TypeScript

Python

Java

Go

Ruby

curl -X POST https://api.openai.com/v1/realtime/calls/$CALL_ID/refer \
  -H "Authorization: Bearer $OPENAI_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"target_uri": "tel:+14155550123"}'

Returns Examples