> For the complete documentation index, see [llms.txt](https://vssl.gitbook.io/vssl-rest-api/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://vssl.gitbook.io/vssl-rest-api/zone-control/rampvolume.md).

# RampVolume

```
PATCH /rampvolume
```

## Parameters

| Parameter | Data Type         | Value                                                       |
| --------- | ----------------- | ----------------------------------------------------------- |
| `serial`  | string, required  | the serial number of a vssl device                          |
| `number`  | integer, required | the zone number.                                            |
| `rampup`  | integer, required | boolean that prescribes a ramp up (1) or ramp down (0) by 1 |

## Response

Status of the call

## Example Request

Sample HTTP request

{% tabs %}
{% tab title="curl" %}

```bash
$ curl --request PATCH http://192.168.0.15:8000/api/rampvolume?'serial=00BD27EF657D&number=1&rampup=1'
```

{% endtab %}

{% tab title="IP Cmd" %}

```bash
IP: 192.168.0.15
Host: 8000
Data: "PATCH /api/rampvolume?serial=00BD27EF657D&number=1&rampup=1 HTTP/1.1\r\n\r\n"
```

{% endtab %}

{% tab title="httpie" %}

```bash
$ http PATCH 192.168.0.15:8000/api/rampvolume serial==00BD27EF657D number==1 rampup==1
```

{% endtab %}

{% tab title="node" %}

```javascript
const axios = require('axios');

axios.patch('http://192.168.0.15:8000/api/rampvolume', {
    params: {
      serial: '00BD27EF657D',
      number: 1,
      rampup: 1
    }
  }).then((response)=>{
    console.log(response);
  }).catch((response)=>{
    console.log('Error making request');
  })
```

{% endtab %}
{% endtabs %}

## Example Response

```javascript
{
  "status": "request sent"
}
```