[Home](./index.md) > [sip.js](./sip.js.md) > [SubscriptionDialog](./sip.js.subscriptiondialog.md) > [subscribe](./sip.js.subscriptiondialog.subscribe.md) ## SubscriptionDialog.subscribe() method 4.1.2.2. Refreshing of Subscriptions https://tools.ietf.org/html/rfc6665\#section-4.1.2.2 Signature: ```typescript subscribe(delegate?: OutgoingSubscribeRequestDelegate, options?: RequestOptions): OutgoingSubscribeRequest; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | delegate | OutgoingSubscribeRequestDelegate | Delegate to handle responses. | | options | RequestOptions | Options bucket. | Returns: `OutgoingSubscribeRequest`