[Home](./index.md) > [sip.js](./sip.js.md) > [SimpleUserDelegate](./sip.js.simpleuserdelegate.md) > [onCallHangup](./sip.js.simpleuserdelegate.oncallhangup.md) ## SimpleUserDelegate.onCallHangup() method Called when a call is hungup. Signature: ```typescript onCallHangup?(): void; ``` Returns: `void` ## Remarks Callback for handling termination of a Session.