[Home](./index.md) > [sip.js](./sip.js.md) > [SimpleUserDelegate](./sip.js.simpleuserdelegate.md) > [onServerDisconnect](./sip.js.simpleuserdelegate.onserverdisconnect.md) ## SimpleUserDelegate.onServerDisconnect() method Called when user is no longer connected. Signature: ```typescript onServerDisconnect?(error?: Error): void; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | error | Error | An Error if server caused the disconnect. Otherwise undefined. | Returns: `void` ## Remarks Callback for handling user becomes disconnected.