# Outbound Call Frequency Restriction Rule Parameters

When you export Outbound Call Frequency Restriction rules from Cloud Voice, or build a file to bulk-import them, each rule is described by the columns below. The file is a comma-separated values (CSV) file, which is a plain-text spreadsheet where each column is separated by a comma. Use this reference to format your values correctly before importing.

## Column reference

| Column | What it holds | Required | Constraints | Default |
|--------|---------------|----------|-------------|---------|
| **Name** | A label that identifies the rule. | Yes | Up to 127 characters. | N/A |
| **Restrictions** | How many outbound calls a user may place within a defined window of time. | Yes | See the format details below. | N/A |

:::caution
Rule names must be unique. Two Outbound Call Frequency Restriction rules cannot share the same name.
:::

## How to write the Restrictions value

Each restriction follows this pattern:

```
{number_of_calls_limit}/{time_limit}/{time_unit}
```

For example, `200/10/second` allows up to 200 outbound calls in any 10-second span.

To apply more than one limit to the same rule, join the entries with an ampersand (`&`):

```
200/10/second&3000/1/minute
```

:::note
When you combine limits with `&`, every limit applies at the same time. In the example above, a call is only allowed if it stays under both 200 calls per 10 seconds and 3000 calls per minute.
:::

### Value rules

- **`{number_of_calls_limit}`**, digits only, up to 5 characters (so the highest value you can enter is `99999`).
- **`{time_limit}`**, digits only, up to 5 characters (so the highest value you can enter is `99999`).
- **`{time_unit}`**, either `second` or `minute`.