Connect or update the workspace's SIP trunk
Upserts the workspace's single trunk — there is no trunk ID in the path because a workspace has only ever had, at most, one. Refused with workspace.locked_to_platform_numbers on a workspace that already buys numbers from Sautikit.
For a registration trunk, the password is pushed to Sautikit's box and a REGISTER is attempted synchronously, inside this same request (up to ~20s). The response's status reflects the outcome immediately: active on success, failed (with last_error) if the provider rejected the credentials or was unreachable — the workspace stays unlocked either way until it actually succeeds. Omit password on a later PUT to keep the password already on file (e.g. when only changing a label); a password rotation re-signals every active BYO number on the trunk automatically.
For an ip_allowlist (signaling) trunk, this only submits the trunk for review — it lands at pending_approval and does not go live, or lock the workspace, until a person on Sautikit's operations team approves it and installs both the signalling and media IPs on the box.
Authorization
bearerAuth Long-lived ES256 JWT minted from the dashboard (https://app.sautikit.com/developers/api-keys). Signed by the
platform keyring. Carries workspace_id and scopes claims;
revoked via the platform deny-list.
In: header
Request Body
application/json
TypeScript Definitions
Use the request body type in TypeScript.
Response Body
application/json
application/json
application/json
curl -X PUT "https://example.com/v1/sip-trunk" \ -H "Content-Type: application/json" \ -d '{ "label": "Head office trunk", "auth_mode": "registration", "proxy": "sip.example-carrier.com", "transport": "udp", "username": "sautikit_100", "password": "…" }'{ "auth_mode": "registration", "label": "string", "realm": "string", "proxy": "string", "transport": "udp", "username": "string", "auth_username": "string", "has_password": true, "signaling_ips": [ "string" ], "media_ips": [ "string" ], "country_code": "string", "outbound_number_format": "string", "outbound_codec_prefs": "string", "outbound_media_security": "string", "status": "pending", "last_error": "string"}{ "error": { "code": "validation.bad_request", "message": "string", "request_id": "string", "details": [ "string" ] }}{ "error": { "code": "validation.bad_request", "message": "string", "request_id": "string", "details": [ "string" ] }}