***

id: 5cf28445-ed59-403d-9920-de2c4942c6cd
title: CallRingback.SilenceParams
slug: /dotnet/reference/calling/call-ringback-silence-params
max-toc-depth: 3
----------------

# SignalWire.Relay.Calling.CallRingback.SilenceParams

This object represents the parameters specific to silence 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.SilenceParams
    {
        Duration = 30
    }
};
```

## Properties

| Property   | Type   | Description                                   |
| ---------- | ------ | --------------------------------------------- |
| `Duration` | string | The maximum duration for silence on ringback. |

## Methods

None

## Events

None