***

id: 60670098-8542-4576-9da8-863ef10ee62b
title: CallDetect.FaxParams
slug: /dotnet/reference/calling/call-detect-fax-params
max-toc-depth: 3
----------------

[call-detect-fax-params-fax-tone]: /docs/server-sdk/v2/dotnet/reference/calling/call-detect-fax-tone

# SignalWire.Relay.Calling.CallDetect.FaxParams

This object represents the parameters specific to fax detection.

## Constructor

The only constructor is the default constructor, properties should all be assigned by initializer or after construction.

**Parameters**

None

**Examples**

> Basic Example

```csharp
CallDetect detect = new CallDetect
{
    Type = CallDetect.DetectType.fax,
    Parameters = new CallDetect.FaxParams
    {
        // No required parameters
    }
};
```

## Properties

| Property | Type                                                                                       | Description                             |
| -------- | ------------------------------------------------------------------------------------------ | --------------------------------------- |
| `Tone`   | [`SignalWire.Relay.Calling.CallDetect.FaxParams.FaxTone`][call-detect-fax-params-fax-tone] | The tone to detect.<br />*Default: CED* |

## Methods

None

## Events

None