[Home](./index.md) > [sip.js](./sip.js.md) > [Referrer](./sip.js.referrer.md) ## Referrer class A referrer sends a [Referral](./sip.js.referral.md) (outgoing REFER). Signature: ```typescript export declare class Referrer ``` ## Remarks Sends an outgoing in dialog REFER request. ## Constructors | Constructor | Modifiers | Description | | --- | --- | --- | | [(constructor)(session, referTo, options)](./sip.js.referrer._constructor_.md) | | Constructs a new instance of the Referrer class. | ## Properties | Property | Modifiers | Type | Description | | --- | --- | --- | --- | | [delegate](./sip.js.referrer.delegate.md) | | ReferrerDelegate | undefined | The referrer delegate. | | [session](./sip.js.referrer.session.md) | | Session | The referrer session. | ## Methods | Method | Modifiers | Description | | --- | --- | --- | | [refer(options)](./sip.js.referrer.refer.md) | | Sends the REFER request. |