| Name | Type | Description | Notes |
|---|---|---|---|
| key | String | The group key: a `YYYY-MM-DD` UTC day, one of your numbers, or a channel. | [optional] |
| calls | Integer | [optional] | |
| answered | Integer | [optional] | |
| minutes | BigDecimal | [optional] | |
| billableUSD | BigDecimal | [optional] | |
| metaUSD | BigDecimal | [optional] |