[Home](./index.md) > [sip.js](./sip.js.md) > [SimpleUser](./sip.js.simpleuser.md) > [unregister](./sip.js.simpleuser.unregister.md) ## SimpleUser.unregister() method Stop receiving incoming calls. Signature: ```typescript unregister(registererUnregisterOptions?: RegistererUnregisterOptions): Promise; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | registererUnregisterOptions | RegistererUnregisterOptions | | Returns: `Promise` ## Remarks Send an un-REGISTER request for the UserAgent's AOR. Resolves when the un-REGISTER request is sent, otherwise rejects.