[Home](./index.md) > [sip.js](./sip.js.md) > [Byer](./sip.js.byer.md) > [(constructor)](./sip.js.byer._constructor_.md) ## Byer.(constructor) Constructs a new instance of the `Byer` class. Signature: ```typescript constructor(session: Session, options?: ByerOptions); ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | session | Session | The session the BYE will be sent from. See [Session](./sip.js.session.md) for details. | | options | ByerOptions | An options bucket. See [ByerOptions](./sip.js.byeroptions.md) for details. |