[Home](./index.md) > [sip.js](./sip.js.md) > [Subscriber](./sip.js.subscriber.md) > [unsubscribe](./sip.js.subscriber.unsubscribe.md) ## Subscriber.unsubscribe() method Unsubscribe from event notifications. Signature: ```typescript unsubscribe(options?: SubscriptionUnsubscribeOptions): Promise; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | options | SubscriptionUnsubscribeOptions | | Returns: `Promise` ## Remarks If the subscription state is SubscriptionState.Subscribed, sends an in dialog SUBSCRIBE request with expires time of zero (an un-subscribe) and terminates the subscription. Otherwise a noop.