[Home](./index.md) > [sip.js](./sip.js.md) > [UserAgentOptions](./sip.js.useragentoptions.md) > [autoStart](./sip.js.useragentoptions.autostart.md) ## UserAgentOptions.autoStart property > Warning: This API is now obsolete. > > If `true`, the user agent calls the `start()` method in the constructor. > Signature: ```typescript autoStart?: boolean; ``` ## Remarks The call to start() resolves when the user agent connects, so if this option is set to `true` an alternative method of connection detection must be used.