To add headers to a

CreateSIPParticipantRequest

for an outbound call, you can use the

headers

property in your request. This allows you to include custom SIP headers when making outbound calls. Here’s an example of how you can structure your request:

{
  "sip_trunk_id": "<your-trunk-id>",
  "sip_call_to": "<phone-number-to-dial>",
  "room_name": "my-sip-room",
  "participant_identity": "sip-test",
  "participant_name": "Test Caller",
  "headers": {
    "X-Custom-Header": "custom-value",
    "Another-Header": "another-value"
  }
}

The

headers

property accepts an object where each key-value pair represents a SIP header name and its value that will be included in the outbound call request. Sources: CreateSipParticipantOptions | LiveKit JS Server SDK - v2.9.7