[Home](./index.md) > [sip.js](./sip.js.md) > [ReferrerDelegate](./sip.js.referrerdelegate.md) ## ReferrerDelegate interface Delegate for [Referrer](./sip.js.referrer.md). Signature: ```typescript export interface ReferrerDelegate extends OutgoingRequestDelegate ``` ## Methods | Method | Description | | --- | --- | | [onNotify(notification)](./sip.js.referrerdelegate.onnotify.md) | |