***

id: c92d4cf4-8378-4140-b456-fb3eb63eb7a0
title: CallRingback.AudioParams
slug: /dotnet/reference/calling/call-ringback-audio-params
max-toc-depth: 3
----------------

# SignalWire.Relay.Calling.CallRingback.AudioParams

This object represents the parameters specific to audio ringback.

## Constructor

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

**Parameters**

None

**Examples**

> Basic Example

```csharp
CallRingback ringback = new CallRingback
{
    Type = CallRingback.RingbackType.audio,
    Parameters = new CallRingback.AudioParams
    {
        URL = "https://path/to/audio/file"
    }
};
```

## Properties

| Property | Type   | Description                        |
| -------- | ------ | ---------------------------------- |
| `URL`    | string | The URL of the audio file to play. |

## Methods

None

## Events

None