| Name | Type | Description | Notes |
|---|---|---|---|
| account_id | string | User's account ID. | [optional] |
| phone_number | string | Toll-free telephone number in E.164 format. | [optional] |
| status | \Bandwidth\Model\TfvCallbackStatusEnum | [optional] | |
| internal_ticket_number | string | Unique identifier (UUID) generated by Bandwidth to assist in tracking the verification status of a toll-free number. | [optional] |