***

id: f5fa93b9-9956-4b2f-a51a-0f0aae80073a
title: CallDevice
slug: /dotnet/reference/calling/call-device
max-toc-depth: 3
----------------

[call-device-device-type]: /docs/server-sdk/v2/dotnet/reference/calling/call-device-type

# SignalWire.Relay.Calling.CallDevice

This object represents a call device.

## Constructor

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

**Parameters**

None

**Examples**

> Basic Example

```csharp
CallDevice device = new CallDevice
{
    Type = CallDevice.DeviceType.phone,
    Parameters = new CallDevice.PhoneParams
    {
        ToNumber = "+1XXXXXXXXXX",
        FromNumber = "+1YYYYYYYYYY",
    }
};
```

## Properties

| Property     | Type                                                                        | Description                                                 |
| ------------ | --------------------------------------------------------------------------- | ----------------------------------------------------------- |
| `Type`       | [`SignalWire.Relay.Calling.CallDevice.DeviceType`][call-device-device-type] | This object indicates the type of the configuration object. |
| `Parameters` | object                                                                      | The configuration object for the device.                    |

## Methods

## ParametersAs\<T>()

This is a helper method to convert the `Parameters` to the real type.

**Parameters**

| Parameter | Type | Required                                   | Description                                                                                                                                     |
| --------- | ---- | ------------------------------------------ | ----------------------------------------------------------------------------------------------------------------------------------------------- |
| `T`       | Type | <span class="required-arg">required</span> | This is the data type for the conversion, see [`SignalWire.Relay.Calling.CallDevice.DeviceType`][call-device-device-type] for more information. |

**Returns**

`T` - This is an instance of the data type resulting from the conversion, see [`SignalWire.Relay.Calling.CallDevice.DeviceType`][call-device-device-type] for more information.

**Examples**

```csharp
CallDevice.PhoneParams phoneParams = device.ParametersAs<CallDevice.PhoneParams>();
```

## Events

None