| Name | Type | Description | Notes |
|---|---|---|---|
| state | CallStateEnum | [optional] | |
| redirectUrl | URI | The URL to send the Redirect event to which will provide new BXML. Required if `state` is `active`. Not allowed if `state` is `completed`. | [optional] |
| redirectMethod | RedirectMethodEnum | [optional] | |
| username | String | Basic auth username. | [optional] |
| password | String | Basic auth password. | [optional] |
| redirectFallbackUrl | URI | A fallback url which, if provided, will be used to retry the redirect callback delivery in case `redirectUrl` fails to respond. | [optional] |
| redirectFallbackMethod | RedirectMethodEnum | [optional] | |
| fallbackUsername | String | Basic auth username. | [optional] |
| fallbackPassword | String | Basic auth password. | [optional] |
| tag | String | A custom string that will be sent with this and all future callbacks unless overwritten by a future `tag` attribute or `<Tag>` verb, or cleared. May be cleared by setting `tag=""`. Max length 256 characters. Not allowed if `state` is `completed`. | [optional] |